Fun with Python id()

id_fun.py

# ##############
# at what number does this error?
# 0? 100,000? never?
# ##############
try:
    for i, n in enumerate(range(0, 100000)):
        assert i is n, f"{i} is {n}"
except AssertionError as e:
    print(f"Error on -> {e}")

# ###
# str
# ###
foo1 = "foo"
foo2 = "foo"
print(f"foo1\t id:{id(foo1)}")
print(f"foo2\t id:{id(foo2)}")
assert foo1 is foo2

bar = "bar"
print(f"bar\t id:{id(bar)}")

assert foo1 is not bar

# ############
# id shadowing
# ############

def fake_id(x):
    print(f"fake_id called with {x}")
    return "fake_id"

def my_func(id):
    print(f"id = {id.__name__}()")
    assert foo1 is not bar
    print("end of my_func")
    
my_func(fake_id)

Related reading

https://stackoverflow.com/questions/77552/id-is-a-bad-variable-name-in-python/79198#79198

https://stackoverflow.com/questions/15667189/what-is-the-id-function-used-for/15667328#15667328