Formating string in python

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1. Problem

When dealing with dataset, data is often named in a “equal-length” way, like below:

000000.jpg 000001.jpg ... 199999.jpg 200000.jpg

How to format such string in python? Here we go.

2. Solution

filename = ['{:0>6}.jpg'.format(i) for i in range(20000)]

Done.

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