| 1 | from __future__ import print_function |
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| 2 | from functools import total_ordering |
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| 3 | from itertools import product |
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| 4 | import sys |
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| 5 | |
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| 6 | print(sys.version) |
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| 7 | |
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| 8 | #for case in ['no_cmp', 'cmp', 'own_cmp']: |
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| 9 | for case in ['own_cmp']: |
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| 10 | print('%s\ncase= %s' % ('='*50, case)) |
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| 11 | |
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| 12 | if case in ['own_cmp']: |
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| 13 | def cmp(a,b): |
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| 14 | return (a > b) - (a < b) |
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| 15 | |
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| 16 | class TestClass(object): |
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| 17 | def __init__(self, val): |
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| 18 | self.val = val |
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| 19 | def __str__(self): |
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| 20 | return 'TestClass(val=%s)' % self.val |
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| 21 | |
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| 22 | if case in ['cmp', 'own_cmp']: |
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| 23 | def __cmp__(self, other): |
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| 24 | return cmp(self.val, other.val) |
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| 25 | |
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| 26 | |
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| 27 | for v1, v2 in ['aa', 'ab', 'ba']: |
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| 28 | t1 = TestClass(v1) |
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| 29 | t2 = TestClass(v2) |
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| 30 | print('t1= %s, id= %s' % (t1, id(t1))) |
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| 31 | print('t2= %s, id= %s\n' % (t2, id(t2))) |
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| 32 | |
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| 33 | for op in ['==', '!=', '< ', '<=', '> ', '>=']: |
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| 34 | try: |
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| 35 | cmp_t = eval('t1'+op+'t2') |
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| 36 | except TypeError: |
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| 37 | cmp_t = 'TypeError' |
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| 38 | cmp_v = eval('v1'+op+'v2') |
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| 39 | cmp_id = eval(str(id(t1))+op+str(id(t2))) |
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| 40 | ok = 'OK' if cmp_t==cmp_v else '' |
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| 41 | print('t1%st2: %-9s (val: %-5s; id: %-5s) %s' % |
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| 42 | (op, cmp_t, cmp_v, cmp_id, ok)) |
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| 43 | print('-'*50) |
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