Why does “[] is [ ]” evaluate to False in python

Question

Try this in an interactive python shell.

[] is [ ]

The above returns False, why?

Answer 1

In python is does a reference equality check like [] and [] they are different objects you can check that by

print id([]),id([])

or

 In [1]: id([])
Out[1]: 140464629086976

In [2]: id([])
Out[2]: 140464628521656

both will return different address and both are different object so is will always give false

[] is []

output

false