576 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			576 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
| import sys
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| 
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| import unittest
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| from test import support
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| from test.test_grammar import (VALID_UNDERSCORE_LITERALS,
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|                                INVALID_UNDERSCORE_LITERALS)
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| 
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| L = [
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|         ('0', 0),
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|         ('1', 1),
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|         ('9', 9),
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|         ('10', 10),
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|         ('99', 99),
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|         ('100', 100),
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|         ('314', 314),
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|         (' 314', 314),
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|         ('314 ', 314),
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|         ('  \t\t  314  \t\t  ', 314),
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|         (repr(sys.maxsize), sys.maxsize),
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|         ('  1x', ValueError),
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|         ('  1  ', 1),
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|         ('  1\02  ', ValueError),
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|         ('', ValueError),
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|         (' ', ValueError),
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|         ('  \t\t  ', ValueError),
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|         ("\u0200", ValueError)
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| ]
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| 
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| class IntSubclass(int):
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|     pass
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| 
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| class IntTestCases(unittest.TestCase):
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| 
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|     def test_basic(self):
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|         self.assertEqual(int(314), 314)
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|         self.assertEqual(int(3.14), 3)
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|         # Check that conversion from float truncates towards zero
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|         self.assertEqual(int(-3.14), -3)
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|         self.assertEqual(int(3.9), 3)
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|         self.assertEqual(int(-3.9), -3)
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|         self.assertEqual(int(3.5), 3)
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|         self.assertEqual(int(-3.5), -3)
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|         self.assertEqual(int("-3"), -3)
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|         self.assertEqual(int(" -3 "), -3)
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|         self.assertEqual(int("\N{EM SPACE}-3\N{EN SPACE}"), -3)
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|         # Different base:
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|         self.assertEqual(int("10",16), 16)
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|         # Test conversion from strings and various anomalies
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|         for s, v in L:
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|             for sign in "", "+", "-":
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|                 for prefix in "", " ", "\t", "  \t\t  ":
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|                     ss = prefix + sign + s
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|                     vv = v
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|                     if sign == "-" and v is not ValueError:
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|                         vv = -v
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|                     try:
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|                         self.assertEqual(int(ss), vv)
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|                     except ValueError:
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|                         pass
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| 
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|         s = repr(-1-sys.maxsize)
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|         x = int(s)
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|         self.assertEqual(x+1, -sys.maxsize)
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|         self.assertIsInstance(x, int)
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|         # should return int
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|         self.assertEqual(int(s[1:]), sys.maxsize+1)
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| 
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|         # should return int
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|         x = int(1e100)
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|         self.assertIsInstance(x, int)
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|         x = int(-1e100)
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|         self.assertIsInstance(x, int)
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| 
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| 
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|         # SF bug 434186:  0x80000000/2 != 0x80000000>>1.
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|         # Worked by accident in Windows release build, but failed in debug build.
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|         # Failed in all Linux builds.
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|         x = -1-sys.maxsize
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|         self.assertEqual(x >> 1, x//2)
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| 
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|         x = int('1' * 600)
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|         self.assertIsInstance(x, int)
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| 
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| 
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|         self.assertRaises(TypeError, int, 1, 12)
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| 
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|         self.assertEqual(int('0o123', 0), 83)
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|         self.assertEqual(int('0x123', 16), 291)
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| 
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|         # Bug 1679: "0x" is not a valid hex literal
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|         self.assertRaises(ValueError, int, "0x", 16)
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|         self.assertRaises(ValueError, int, "0x", 0)
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| 
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|         self.assertRaises(ValueError, int, "0o", 8)
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|         self.assertRaises(ValueError, int, "0o", 0)
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| 
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|         self.assertRaises(ValueError, int, "0b", 2)
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|         self.assertRaises(ValueError, int, "0b", 0)
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| 
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|         # SF bug 1334662: int(string, base) wrong answers
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|         # Various representations of 2**32 evaluated to 0
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|         # rather than 2**32 in previous versions
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| 
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|         self.assertEqual(int('100000000000000000000000000000000', 2), 4294967296)
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|         self.assertEqual(int('102002022201221111211', 3), 4294967296)
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|         self.assertEqual(int('10000000000000000', 4), 4294967296)
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|         self.assertEqual(int('32244002423141', 5), 4294967296)
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|         self.assertEqual(int('1550104015504', 6), 4294967296)
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|         self.assertEqual(int('211301422354', 7), 4294967296)
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|         self.assertEqual(int('40000000000', 8), 4294967296)
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|         self.assertEqual(int('12068657454', 9), 4294967296)
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|         self.assertEqual(int('4294967296', 10), 4294967296)
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|         self.assertEqual(int('1904440554', 11), 4294967296)
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|         self.assertEqual(int('9ba461594', 12), 4294967296)
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|         self.assertEqual(int('535a79889', 13), 4294967296)
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|         self.assertEqual(int('2ca5b7464', 14), 4294967296)
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|         self.assertEqual(int('1a20dcd81', 15), 4294967296)
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|         self.assertEqual(int('100000000', 16), 4294967296)
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|         self.assertEqual(int('a7ffda91', 17), 4294967296)
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|         self.assertEqual(int('704he7g4', 18), 4294967296)
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|         self.assertEqual(int('4f5aff66', 19), 4294967296)
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|         self.assertEqual(int('3723ai4g', 20), 4294967296)
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|         self.assertEqual(int('281d55i4', 21), 4294967296)
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|         self.assertEqual(int('1fj8b184', 22), 4294967296)
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|         self.assertEqual(int('1606k7ic', 23), 4294967296)
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|         self.assertEqual(int('mb994ag', 24), 4294967296)
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|         self.assertEqual(int('hek2mgl', 25), 4294967296)
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|         self.assertEqual(int('dnchbnm', 26), 4294967296)
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|         self.assertEqual(int('b28jpdm', 27), 4294967296)
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|         self.assertEqual(int('8pfgih4', 28), 4294967296)
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|         self.assertEqual(int('76beigg', 29), 4294967296)
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|         self.assertEqual(int('5qmcpqg', 30), 4294967296)
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|         self.assertEqual(int('4q0jto4', 31), 4294967296)
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|         self.assertEqual(int('4000000', 32), 4294967296)
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|         self.assertEqual(int('3aokq94', 33), 4294967296)
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|         self.assertEqual(int('2qhxjli', 34), 4294967296)
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|         self.assertEqual(int('2br45qb', 35), 4294967296)
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|         self.assertEqual(int('1z141z4', 36), 4294967296)
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| 
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|         # tests with base 0
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|         # this fails on 3.0, but in 2.x the old octal syntax is allowed
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|         self.assertEqual(int(' 0o123  ', 0), 83)
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|         self.assertEqual(int(' 0o123  ', 0), 83)
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|         self.assertEqual(int('000', 0), 0)
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|         self.assertEqual(int('0o123', 0), 83)
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|         self.assertEqual(int('0x123', 0), 291)
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|         self.assertEqual(int('0b100', 0), 4)
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|         self.assertEqual(int(' 0O123   ', 0), 83)
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|         self.assertEqual(int(' 0X123  ', 0), 291)
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|         self.assertEqual(int(' 0B100 ', 0), 4)
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| 
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|         # without base still base 10
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|         self.assertEqual(int('0123'), 123)
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|         self.assertEqual(int('0123', 10), 123)
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| 
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|         # tests with prefix and base != 0
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|         self.assertEqual(int('0x123', 16), 291)
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|         self.assertEqual(int('0o123', 8), 83)
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|         self.assertEqual(int('0b100', 2), 4)
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|         self.assertEqual(int('0X123', 16), 291)
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|         self.assertEqual(int('0O123', 8), 83)
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|         self.assertEqual(int('0B100', 2), 4)
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| 
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|         # the code has special checks for the first character after the
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|         #  type prefix
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|         self.assertRaises(ValueError, int, '0b2', 2)
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|         self.assertRaises(ValueError, int, '0b02', 2)
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|         self.assertRaises(ValueError, int, '0B2', 2)
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|         self.assertRaises(ValueError, int, '0B02', 2)
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|         self.assertRaises(ValueError, int, '0o8', 8)
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|         self.assertRaises(ValueError, int, '0o08', 8)
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|         self.assertRaises(ValueError, int, '0O8', 8)
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|         self.assertRaises(ValueError, int, '0O08', 8)
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|         self.assertRaises(ValueError, int, '0xg', 16)
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|         self.assertRaises(ValueError, int, '0x0g', 16)
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|         self.assertRaises(ValueError, int, '0Xg', 16)
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|         self.assertRaises(ValueError, int, '0X0g', 16)
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| 
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|         # SF bug 1334662: int(string, base) wrong answers
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|         # Checks for proper evaluation of 2**32 + 1
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|         self.assertEqual(int('100000000000000000000000000000001', 2), 4294967297)
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|         self.assertEqual(int('102002022201221111212', 3), 4294967297)
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|         self.assertEqual(int('10000000000000001', 4), 4294967297)
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|         self.assertEqual(int('32244002423142', 5), 4294967297)
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|         self.assertEqual(int('1550104015505', 6), 4294967297)
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|         self.assertEqual(int('211301422355', 7), 4294967297)
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|         self.assertEqual(int('40000000001', 8), 4294967297)
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|         self.assertEqual(int('12068657455', 9), 4294967297)
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|         self.assertEqual(int('4294967297', 10), 4294967297)
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|         self.assertEqual(int('1904440555', 11), 4294967297)
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|         self.assertEqual(int('9ba461595', 12), 4294967297)
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|         self.assertEqual(int('535a7988a', 13), 4294967297)
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|         self.assertEqual(int('2ca5b7465', 14), 4294967297)
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|         self.assertEqual(int('1a20dcd82', 15), 4294967297)
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|         self.assertEqual(int('100000001', 16), 4294967297)
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|         self.assertEqual(int('a7ffda92', 17), 4294967297)
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|         self.assertEqual(int('704he7g5', 18), 4294967297)
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|         self.assertEqual(int('4f5aff67', 19), 4294967297)
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|         self.assertEqual(int('3723ai4h', 20), 4294967297)
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|         self.assertEqual(int('281d55i5', 21), 4294967297)
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|         self.assertEqual(int('1fj8b185', 22), 4294967297)
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|         self.assertEqual(int('1606k7id', 23), 4294967297)
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|         self.assertEqual(int('mb994ah', 24), 4294967297)
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|         self.assertEqual(int('hek2mgm', 25), 4294967297)
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|         self.assertEqual(int('dnchbnn', 26), 4294967297)
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|         self.assertEqual(int('b28jpdn', 27), 4294967297)
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|         self.assertEqual(int('8pfgih5', 28), 4294967297)
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|         self.assertEqual(int('76beigh', 29), 4294967297)
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|         self.assertEqual(int('5qmcpqh', 30), 4294967297)
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|         self.assertEqual(int('4q0jto5', 31), 4294967297)
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|         self.assertEqual(int('4000001', 32), 4294967297)
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|         self.assertEqual(int('3aokq95', 33), 4294967297)
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|         self.assertEqual(int('2qhxjlj', 34), 4294967297)
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|         self.assertEqual(int('2br45qc', 35), 4294967297)
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|         self.assertEqual(int('1z141z5', 36), 4294967297)
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| 
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|     def test_underscores(self):
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|         for lit in VALID_UNDERSCORE_LITERALS:
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|             if any(ch in lit for ch in '.eEjJ'):
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|                 continue
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|             self.assertEqual(int(lit, 0), eval(lit))
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|             self.assertEqual(int(lit, 0), int(lit.replace('_', ''), 0))
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|         for lit in INVALID_UNDERSCORE_LITERALS:
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|             if any(ch in lit for ch in '.eEjJ'):
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|                 continue
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|             self.assertRaises(ValueError, int, lit, 0)
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|         # Additional test cases with bases != 0, only for the constructor:
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|         self.assertEqual(int("1_00", 3), 9)
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|         self.assertEqual(int("0_100"), 100)  # not valid as a literal!
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|         self.assertEqual(int(b"1_00"), 100)  # byte underscore
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|         self.assertRaises(ValueError, int, "_100")
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|         self.assertRaises(ValueError, int, "+_100")
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|         self.assertRaises(ValueError, int, "1__00")
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|         self.assertRaises(ValueError, int, "100_")
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| 
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|     @support.cpython_only
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|     def test_small_ints(self):
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|         # Bug #3236: Return small longs from PyLong_FromString
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|         self.assertIs(int('10'), 10)
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|         self.assertIs(int('-1'), -1)
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|         self.assertIs(int(b'10'), 10)
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|         self.assertIs(int(b'-1'), -1)
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| 
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|     def test_no_args(self):
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|         self.assertEqual(int(), 0)
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| 
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|     def test_keyword_args(self):
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|         # Test invoking int() using keyword arguments.
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|         self.assertEqual(int('100', base=2), 4)
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|         with self.assertRaisesRegex(TypeError, 'keyword argument'):
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|             int(x=1.2)
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|         with self.assertRaisesRegex(TypeError, 'keyword argument'):
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|             int(x='100', base=2)
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|         self.assertRaises(TypeError, int, base=10)
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|         self.assertRaises(TypeError, int, base=0)
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| 
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|     def test_int_base_limits(self):
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|         """Testing the supported limits of the int() base parameter."""
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|         self.assertEqual(int('0', 5), 0)
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|         with self.assertRaises(ValueError):
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|             int('0', 1)
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|         with self.assertRaises(ValueError):
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|             int('0', 37)
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|         with self.assertRaises(ValueError):
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|             int('0', -909)  # An old magic value base from Python 2.
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|         with self.assertRaises(ValueError):
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|             int('0', base=0-(2**234))
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|         with self.assertRaises(ValueError):
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|             int('0', base=2**234)
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|         # Bases 2 through 36 are supported.
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|         for base in range(2,37):
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|             self.assertEqual(int('0', base=base), 0)
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| 
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|     def test_int_base_bad_types(self):
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|         """Not integer types are not valid bases; issue16772."""
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|         with self.assertRaises(TypeError):
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|             int('0', 5.5)
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|         with self.assertRaises(TypeError):
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|             int('0', 5.0)
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| 
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|     def test_int_base_indexable(self):
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|         class MyIndexable(object):
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|             def __init__(self, value):
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|                 self.value = value
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|             def __index__(self):
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|                 return self.value
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| 
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|         # Check out of range bases.
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|         for base in 2**100, -2**100, 1, 37:
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|             with self.assertRaises(ValueError):
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|                 int('43', base)
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| 
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|         # Check in-range bases.
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|         self.assertEqual(int('101', base=MyIndexable(2)), 5)
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|         self.assertEqual(int('101', base=MyIndexable(10)), 101)
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|         self.assertEqual(int('101', base=MyIndexable(36)), 1 + 36**2)
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| 
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|     def test_non_numeric_input_types(self):
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|         # Test possible non-numeric types for the argument x, including
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|         # subclasses of the explicitly documented accepted types.
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|         class CustomStr(str): pass
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|         class CustomBytes(bytes): pass
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|         class CustomByteArray(bytearray): pass
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| 
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|         factories = [
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|             bytes,
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|             bytearray,
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|             lambda b: CustomStr(b.decode()),
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|             CustomBytes,
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|             CustomByteArray,
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|             memoryview,
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|         ]
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|         try:
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|             from array import array
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|         except ImportError:
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|             pass
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|         else:
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|             factories.append(lambda b: array('B', b))
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| 
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|         for f in factories:
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|             x = f(b'100')
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|             with self.subTest(type(x)):
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|                 self.assertEqual(int(x), 100)
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|                 if isinstance(x, (str, bytes, bytearray)):
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|                     self.assertEqual(int(x, 2), 4)
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|                 else:
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|                     msg = "can't convert non-string"
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|                     with self.assertRaisesRegex(TypeError, msg):
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|                         int(x, 2)
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|                 with self.assertRaisesRegex(ValueError, 'invalid literal'):
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|                     int(f(b'A' * 0x10))
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| 
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|     def test_int_memoryview(self):
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|         self.assertEqual(int(memoryview(b'123')[1:3]), 23)
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|         self.assertEqual(int(memoryview(b'123\x00')[1:3]), 23)
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|         self.assertEqual(int(memoryview(b'123 ')[1:3]), 23)
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|         self.assertEqual(int(memoryview(b'123A')[1:3]), 23)
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|         self.assertEqual(int(memoryview(b'1234')[1:3]), 23)
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| 
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|     def test_string_float(self):
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|         self.assertRaises(ValueError, int, '1.2')
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| 
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|     def test_intconversion(self):
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|         # Test __int__()
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|         class ClassicMissingMethods:
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|             pass
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|         self.assertRaises(TypeError, int, ClassicMissingMethods())
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| 
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|         class MissingMethods(object):
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|             pass
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|         self.assertRaises(TypeError, int, MissingMethods())
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| 
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|         class Foo0:
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|             def __int__(self):
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|                 return 42
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| 
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|         self.assertEqual(int(Foo0()), 42)
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| 
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|         class Classic:
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|             pass
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|         for base in (object, Classic):
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|             class IntOverridesTrunc(base):
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|                 def __int__(self):
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|                     return 42
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|                 def __trunc__(self):
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|                     return -12
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|             self.assertEqual(int(IntOverridesTrunc()), 42)
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| 
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|             class JustTrunc(base):
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|                 def __trunc__(self):
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|                     return 42
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|             self.assertEqual(int(JustTrunc()), 42)
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| 
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|             class ExceptionalTrunc(base):
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|                 def __trunc__(self):
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|                     1 / 0
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|             with self.assertRaises(ZeroDivisionError):
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|                 int(ExceptionalTrunc())
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| 
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|             for trunc_result_base in (object, Classic):
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|                 class Index(trunc_result_base):
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|                     def __index__(self):
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|                         return 42
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| 
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|                 class TruncReturnsNonInt(base):
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|                     def __trunc__(self):
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|                         return Index()
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|                 self.assertEqual(int(TruncReturnsNonInt()), 42)
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| 
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|                 class Intable(trunc_result_base):
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|                     def __int__(self):
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|                         return 42
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| 
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|                 class TruncReturnsNonIndex(base):
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|                     def __trunc__(self):
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|                         return Intable()
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|                 self.assertEqual(int(TruncReturnsNonInt()), 42)
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| 
 | |
|                 class NonIntegral(trunc_result_base):
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|                     def __trunc__(self):
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|                         # Check that we avoid infinite recursion.
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|                         return NonIntegral()
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| 
 | |
|                 class TruncReturnsNonIntegral(base):
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|                     def __trunc__(self):
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|                         return NonIntegral()
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|                 try:
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|                     int(TruncReturnsNonIntegral())
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|                 except TypeError as e:
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|                     self.assertEqual(str(e),
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|                                       "__trunc__ returned non-Integral"
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|                                       " (type NonIntegral)")
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|                 else:
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|                     self.fail("Failed to raise TypeError with %s" %
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|                               ((base, trunc_result_base),))
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| 
 | |
|                 # Regression test for bugs.python.org/issue16060.
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|                 class BadInt(trunc_result_base):
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|                     def __int__(self):
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|                         return 42.0
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| 
 | |
|                 class TruncReturnsBadInt(base):
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|                     def __trunc__(self):
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|                         return BadInt()
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| 
 | |
|                 with self.assertRaises(TypeError):
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|                     int(TruncReturnsBadInt())
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| 
 | |
|     def test_int_subclass_with_index(self):
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|         class MyIndex(int):
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|             def __index__(self):
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|                 return 42
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| 
 | |
|         class BadIndex(int):
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|             def __index__(self):
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|                 return 42.0
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| 
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|         my_int = MyIndex(7)
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|         self.assertEqual(my_int, 7)
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|         self.assertEqual(int(my_int), 7)
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| 
 | |
|         self.assertEqual(int(BadIndex()), 0)
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| 
 | |
|     def test_int_subclass_with_int(self):
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|         class MyInt(int):
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|             def __int__(self):
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|                 return 42
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| 
 | |
|         class BadInt(int):
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|             def __int__(self):
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|                 return 42.0
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| 
 | |
|         my_int = MyInt(7)
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|         self.assertEqual(my_int, 7)
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|         self.assertEqual(int(my_int), 42)
 | |
| 
 | |
|         my_int = BadInt(7)
 | |
|         self.assertEqual(my_int, 7)
 | |
|         self.assertRaises(TypeError, int, my_int)
 | |
| 
 | |
|     def test_int_returns_int_subclass(self):
 | |
|         class BadIndex:
 | |
|             def __index__(self):
 | |
|                 return True
 | |
| 
 | |
|         class BadIndex2(int):
 | |
|             def __index__(self):
 | |
|                 return True
 | |
| 
 | |
|         class BadInt:
 | |
|             def __int__(self):
 | |
|                 return True
 | |
| 
 | |
|         class BadInt2(int):
 | |
|             def __int__(self):
 | |
|                 return True
 | |
| 
 | |
|         class TruncReturnsBadIndex:
 | |
|             def __trunc__(self):
 | |
|                 return BadIndex()
 | |
| 
 | |
|         class TruncReturnsBadInt:
 | |
|             def __trunc__(self):
 | |
|                 return BadInt()
 | |
| 
 | |
|         class TruncReturnsIntSubclass:
 | |
|             def __trunc__(self):
 | |
|                 return True
 | |
| 
 | |
|         bad_int = BadIndex()
 | |
|         with self.assertWarns(DeprecationWarning):
 | |
|             n = int(bad_int)
 | |
|         self.assertEqual(n, 1)
 | |
|         self.assertIs(type(n), int)
 | |
| 
 | |
|         bad_int = BadIndex2()
 | |
|         n = int(bad_int)
 | |
|         self.assertEqual(n, 0)
 | |
|         self.assertIs(type(n), int)
 | |
| 
 | |
|         bad_int = BadInt()
 | |
|         with self.assertWarns(DeprecationWarning):
 | |
|             n = int(bad_int)
 | |
|         self.assertEqual(n, 1)
 | |
|         self.assertIs(type(n), int)
 | |
| 
 | |
|         bad_int = BadInt2()
 | |
|         with self.assertWarns(DeprecationWarning):
 | |
|             n = int(bad_int)
 | |
|         self.assertEqual(n, 1)
 | |
|         self.assertIs(type(n), int)
 | |
| 
 | |
|         bad_int = TruncReturnsBadIndex()
 | |
|         with self.assertWarns(DeprecationWarning):
 | |
|             n = int(bad_int)
 | |
|         self.assertEqual(n, 1)
 | |
|         self.assertIs(type(n), int)
 | |
| 
 | |
|         bad_int = TruncReturnsBadInt()
 | |
|         with self.assertWarns(DeprecationWarning):
 | |
|             n = int(bad_int)
 | |
|         self.assertEqual(n, 1)
 | |
|         self.assertIs(type(n), int)
 | |
| 
 | |
|         good_int = TruncReturnsIntSubclass()
 | |
|         n = int(good_int)
 | |
|         self.assertEqual(n, 1)
 | |
|         self.assertIs(type(n), int)
 | |
|         n = IntSubclass(good_int)
 | |
|         self.assertEqual(n, 1)
 | |
|         self.assertIs(type(n), IntSubclass)
 | |
| 
 | |
|     def test_error_message(self):
 | |
|         def check(s, base=None):
 | |
|             with self.assertRaises(ValueError,
 | |
|                                    msg="int(%r, %r)" % (s, base)) as cm:
 | |
|                 if base is None:
 | |
|                     int(s)
 | |
|                 else:
 | |
|                     int(s, base)
 | |
|             self.assertEqual(cm.exception.args[0],
 | |
|                 "invalid literal for int() with base %d: %r" %
 | |
|                 (10 if base is None else base, s))
 | |
| 
 | |
|         check('\xbd')
 | |
|         check('123\xbd')
 | |
|         check('  123 456  ')
 | |
| 
 | |
|         check('123\x00')
 | |
|         # SF bug 1545497: embedded NULs were not detected with explicit base
 | |
|         check('123\x00', 10)
 | |
|         check('123\x00 245', 20)
 | |
|         check('123\x00 245', 16)
 | |
|         check('123\x00245', 20)
 | |
|         check('123\x00245', 16)
 | |
|         # byte string with embedded NUL
 | |
|         check(b'123\x00')
 | |
|         check(b'123\x00', 10)
 | |
|         # non-UTF-8 byte string
 | |
|         check(b'123\xbd')
 | |
|         check(b'123\xbd', 10)
 | |
|         # lone surrogate in Unicode string
 | |
|         check('123\ud800')
 | |
|         check('123\ud800', 10)
 | |
| 
 | |
|     def test_issue31619(self):
 | |
|         self.assertEqual(int('1_0_1_0_1_0_1_0_1_0_1_0_1_0_1_0_1_0_1_0_1_0_1_0_1_0_1_0_1_0_1', 2),
 | |
|                          0b1010101010101010101010101010101)
 | |
|         self.assertEqual(int('1_2_3_4_5_6_7_0_1_2_3', 8), 0o12345670123)
 | |
|         self.assertEqual(int('1_2_3_4_5_6_7_8_9', 16), 0x123456789)
 | |
|         self.assertEqual(int('1_2_3_4_5_6_7', 32), 1144132807)
 | |
| 
 | |
| 
 | |
| if __name__ == "__main__":
 | |
|     unittest.main()
 |