Python 遍历 001-100 范围内的文件名

Question

I have a problem. I need to iterate through files in directory with the following structure - filename[number1]-[number2].png .Number 1 is in range 01-10 and number 2 is in range 000-200. Examples of files names are file02-132.png or file09-099.png .Thanks for any help.

i know how to iterate for example

fnames = ['file{}.png'.format(i) for i in range(1,200)]

for fname in fnames:

#do stuff

But it doesn't work with files like this for me

Answer 1

You need to use a fixed width with leading zeros in the format specifier:

fnames = ['file{:03}.png'.format(i) for i in range(1, 200)]

See the Format String Syntax section in the manual.

Answer 2

here my attempt:

fnames = ['file{:02}-{:03}.png'.format(ii, i)  for ii in range(0,10) for i in range(1, 200)]

for i in fnames:
    print(i)