[英]How to convert this for loop in list comprehension?
I have a for loop like this: 我有一个像这样的for循环:
for i in conversion:
for f in glob.glob(i):
print(os.path.getsize(f))
I want to convert this into list comprehension: 我想将其转换为列表理解:
Tried this: 试过这个:
[os.path.getsize(f) for f in glob.glob(i) for i in conversion]
but didn't work. 但没有奏效。
The order of the for
loops in a double list comprehension is the same order that you would use with nested loops: double list comprehension中
for
循环的顺序与嵌套循环使用的顺序相同 :
[os.path.getsize(f) for i in conversion for f in glob.glob(i)]
It's a bit confusing because you expect the inner loop to be more "inner", but once you realize it is the same order as the nested loop, everything is easy :) 这有点令人困惑,因为你期望内部循环更“内在”,但一旦你意识到它与嵌套循环的顺序相同,一切都很简单:)
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