Hi,

I tried addition and in-place addition on a list.

>>> l = ['a', 'b', 'c']

>>> l = l + 'de' (raises an error)

>>> l += 'de'
>>> print(l)
['a', 'b' , 'c', 'd', 'e']

I want to ask why the behaviour of both these are different?? If it is done intentionally, then it should be there in the documentation but I am not able to find any reference.