On 01/29/2013 08:21 AM, iMath wrote:
why [os.path.join(r'E:\Python', name) for name in []] returns [] ?
please explain it in detail ！
[ os.path.join(r'E:\Python', name) for name in [] ]
It'd be nice if you would explain what part of it bothers you. Do you
know what a list comprehension is? Do you know how to decompose a list
comprehension into a for-loop? Do you know that [] is an empty list object?
res = []
for name in []:
res.append( XXXX )
Since the for loop doesn't loop even once, the result is the initial
value, the empty loop.
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DaveA
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