blob: ffea08e575ea7395691e6257ad6433553b9ac1f8 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
# test builtin hash function
print(hash(False))
print(hash(True))
print({():1}) # hash tuple
print({(1,):1}) # hash non-empty tuple
print({1 << 66:1}) # hash big int
print({-(1 << 66):2}) # hash negative big int
print(hash in {hash:1}) # hash function
try:
hash([])
except TypeError:
print("TypeError")
class A:
def __hash__(self):
return 123
def __repr__(self):
return "a instance"
print(hash(A()))
print({A():1})
# all user-classes have default __hash__
class B:
pass
hash(B())
# if __eq__ is defined then default __hash__ is not used
class C:
def __eq__(self, another):
return True
try:
hash(C())
except TypeError:
print("TypeError")
# __hash__ must return an int
class D:
def __hash__(self):
return None
try:
hash(D())
except TypeError:
print("TypeError")
# __hash__ returning a bool should be converted to an int
class E:
def __hash__(self):
return True
print(hash(E()))
# __hash__ returning a large number should be truncated
class F:
def __hash__(self):
return 1 << 70 | 1
print(hash(F()) != 0)
|
