python is_vs_equal.py

Posted 2021-05-09

# coding=UTF-8

a = "s"
b = "s"
print(id(a)) # python use string interning for short strings
print(id(b))
assert a is b
assert a == b

c = "x" * 100
d = "x" * 100
print(id(c))
print(id(d))
assert c is d
assert c == d