4. Why does comparing strings in Python using either \'==\' or \'is\' sometimes produce a different result?

Why does comparing strings in Python using either \'==\' or \'is\' sometimes produce a different result?

Answer

is is identity testing, == is equality testing. what happens in your code would be emulated in the interpreter like this:

>>> a ='pub'>>> b =''.join(['p','u','b'])>>> a == b
True>>> a is b
False

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