[os.path.join(r'E:\Python', name) for name in []] returns []

[Steven D'Aprano]

iMath wrote:

> why [os.path.join(r'E:\Python', name) for name in []] returns [] ?

Because you are iterating over an empty list, [].

That list comprehension is the equivalent of:


result = []
for name in []:
    result.append( os.path.join(r'E:\Python', name) )


Since you iterate over an empty list, the body of the loop never executes, 
and the result list remains empty.

What did you expect it to do?


-- 
Steven