# pylint: disable=missing-docstring, invalid-name, literal-comparison, comparison-with-itself, comparison-of-constants
x = 42
a = x is None
b = x == None  # [singleton-comparison]
c = x == True  # [singleton-comparison]
d = x == False  # [singleton-comparison]
e = True == True  # [singleton-comparison]
f = x is 1
g = 123 is "123"
h = None is x
i = None == x  # [singleton-comparison]
i1 = True == x  # [singleton-comparison]
i2 = False == x  # [singleton-comparison]

j = x != True  # [singleton-comparison]
j1 = x != False  # [singleton-comparison]
j2 = x != None  # [singleton-comparison]
assert x == True  # [singleton-comparison]
assert x != False  # [singleton-comparison]
if x == True:  # [singleton-comparison]
    pass
z = bool(x == True)  # [singleton-comparison]