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"""Test assignment expressions"""
# pylint: disable=missing-docstring,unused-argument,unused-import,invalid-name
# pylint: disable=blacklisted-name,unused-variable,pointless-statement,unused-variable
# pylint: disable=unnecessary-lambda-assignment
import re
if (a := True):
x = a
else:
x = False
x = b if (b := True) else False
x2: bool = b2 if (b2 := True) else False
x3 = 0
x3 += b3 if (b3 := 4) else 6
a = ["a ", "b ", "c "]
c = [text for el in a if (text := el.strip()) == "b"]
# check wrong usage
assert err_a, (err_a := 2) # [used-before-assignment]
print(err_b and (err_b := 2)) # [used-before-assignment]
values = (
err_c := err_d, # [used-before-assignment]
err_d := 2,
)
# https://github.com/pylint-dev/pylint/issues/3347
s = 'foo' if (fval := lambda: 1) is None else fval
# https://github.com/pylint-dev/pylint/issues/3953
assert (n := 2) == 1, f"Expected 1, but got {n}"
dict({1: (o := 2)}, data=o)
assert (p := 2) == 1, \
p
FOO_PATT = re.compile("")
foo = m.group("foo") if (m := FOO_PATT.match("")) else False
# https://github.com/pylint-dev/pylint/issues/3865
if (c := lambda: 2) and c():
print("ok")
def func():
print((d := lambda: 2) and d)
# https://github.com/pylint-dev/pylint/issues/3275
values = (
e := 1,
f := e,
)
print(values)
function = lambda: (
h := 1,
i := h,
)
print(function())
# https://github.com/pylint-dev/pylint/issues/3763
foo if (foo := 3 - 2) > 0 else 0
# https://github.com/pylint-dev/pylint/issues/4238
l1 = f'The number {(count1 := 4)} ' \
f'is equal to {count1}'
l2: str = (
f'The number {(count2 := 4)} '
f'is equal to {count2}'
)
l3 = "Hello "
l3 += (
f'The number {(count3 := 4)} '
f'is equal to {count3}'
)
# https://github.com/pylint-dev/pylint/issues/4301
def func2():
return f'The number {(count := 4)} ' \
f'is equal to {count}'
# https://github.com/pylint-dev/pylint/issues/4828
def func3():
return bar if (bar := "") else ""
# Lambda and IfExp
def func4():
l = lambda x: y if (y := x) else None
# Crash related to assignment expression in nested if statements
# See https://github.com/pylint-dev/pylint/issues/5178
def func5(val):
variable = None
if val == 1:
variable = "value"
if variable := "value":
pass
elif val == 2:
variable = "value_two"
variable = "value_two"
return variable
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