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
|
# pylint: disable=invalid-name,missing-docstring,pointless-statement,unnecessary-comprehension,undefined-variable
x = 1
var = frozenset({1, 2, 3})
x in var
x in {1, 2, 3}
x in (1, 2, 3) # [use-set-for-membership]
x in [1, 2, 3] # [use-set-for-membership]
if x in var:
pass
if x in {1, 2, 3}:
pass
if x in (1, 2, 3): # [use-set-for-membership]
pass
if x in [1, 2, 3]: # [use-set-for-membership]
pass
42 if x in [1, 2, 3] else None # [use-set-for-membership]
assert x in [1, 2, 3] # [use-set-for-membership]
(x for x in var if x in [1, 2, 3]) # [use-set-for-membership]
while x in [1, 2, 3]: # [use-set-for-membership]
break
# Stacked operators, rightmost pair is evaluated first
# Doesn't make much sense in practice since `in` will only return `bool`
True == x in [1, 2, 3] # [use-set-for-membership] # noqa: E712
1 >= x in [1, 2, 3] # [use-set-for-membership] # noqa: E712
# Test hashable heuristic
x in (1, "Hello World", False, None) # [use-set-for-membership]
x in (1, []) # List is not hashable
if some_var:
var2 = 2
else:
var2 = []
x in (1, var2) # var2 can be a list
|
