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"""Test the superfluous-parens warning."""
# pylint: disable=unneeded-not, unnecessary-comprehension, missing-function-docstring, invalid-name, fixme
# pylint: disable=import-error, missing-class-docstring, too-few-public-methods
import numpy as np
A = 3
if (A == 5): # [superfluous-parens]
pass
if not (A == 5): # [superfluous-parens]
pass
if not (3 or 5):
pass
for (x) in (1, 2, 3): # [superfluous-parens]
print(x)
if (1) in (1, 2, 3): # [superfluous-parens]
pass
if (1, 2) in (1, 2, 3):
pass
DICT = {'a': 1, 'b': 2}
del(DICT['b']) # [superfluous-parens]
del DICT['a']
B = [x for x in ((3, 4))]
C = [x for x in ((3, 4) if 1 > 0 else (5, 6))]
D = [x for x in ((3, 4) if 1 > 0 else ((5, 6)))]
E = [x for x in ((3, 4) if 1 > 0 else ((((5, 6)))))]
# Test assertions
F = "Version 1.0"
G = "1.0"
assert "Version " + G in F
assert ("Version " + G) in F # [superfluous-parens]
# Test assignment
H = 2 + (5 * 3)
NUMS_LIST = ['1', '2', '3']
NUMS_SET = {'1', '2', '3'}
NUMS_DICT = {'1': 1, '2': 2, '3': 3}
I = tuple(x for x in ((a, str(a)) for a in ()))
# Test functions
def function_A():
return (x for x in ((3, 4)))
def function_B(var):
return (var.startswith(('A', 'B', 'C')) or var == 'D')
# TODO: Test string combinations, see https://github.com/PyCQA/pylint/issues/4792
# Lines 45, 46 & 47 should raise the superfluous-parens message
J = "TestString"
K = ("Test " + "String")
L = ("Test " + "String") in I
assert "" + ("Version " + "String") in I
# Test numpy
def function_numpy_A(var_1: int, var_2: int) -> np.ndarray:
result = (((var_1 & var_2)) > 0)
return result.astype(np.float32)
def function_numpy_B(var_1: int, var_2: int) -> np.ndarray:
return (((var_1 & var_2)) > 0).astype(np.float32)
# Test Class
class ClassA:
keys = []
def __iter__(self):
return ((k, getattr(self, k)) for k in self.keys)
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