Python: Simplest method for zero-padding a number

Harley provides an awesome method for zero padding a number in a string.

If the number is provided in string format:

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1.n = '4'

2.print n.zfill(3)

3.'004'

And for integer format:

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1.n = 4

2.print '%03d' % n

3.'004'

Source

• Python: Nicest way to pad zeroes to string