# "is" vs "=="
>>> a = [1, 2, 3]
>>> b = a
>>> a is b
True
>>> a == b
True
>>> c = list(a)
>>> a == c
True
>>> a is c
False
# • "is" expressions evaluate to True if two
# variables point to the same object
# • "==" evaluates to True if the objects
# referred to by the variables are equal
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本文标题："is" vs. "=="
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