What is the most Pythonic way to pad a numeric string with zeroes to the left, i.e., so the numeric string has a specific length?
转载于:https://stackoverflow.com/questions/339007/nicest-way-to-pad-zeroes-to-a-string
What is the most Pythonic way to pad a numeric string with zeroes to the left, i.e., so the numeric string has a specific length?
转载于:https://stackoverflow.com/questions/339007/nicest-way-to-pad-zeroes-to-a-string
Strings:
>>> n = '4'
>>> print n.zfill(3)
004
And for numbers:
>>> n = 4
>>> print '%03d' % n
004
>>> print format(n, '03') # python >= 2.6
004
>>> print '{0:03d}'.format(n) # python >= 2.6
004
>>> print '{foo:03d}'.format(foo=n) # python >= 2.6
004
>>> print('{:03d}'.format(n)) # python >= 2.7 + python3
004
>>> print('{0:03d}'.format(n)) # python 3
004
>>> print(f'{n:03}') # python >= 3.6
004