format - python padding decimals with zeros -

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i'm looking way pad float decimals zeros:

this 1 reference:

in [37]: '{:5.5}'.format(round(4.123456, 5)) out[37]: '4.1235'

i have this: 

in [38]: '{:5.5}'.format(4.1) out[38]: '  4.1'

but have this:

out[38]: '4.1000'

for formatting floating point numbers should use "f" specifier:

>>> '{:f}'.format(4.1) '4.100000'

now ":5.5f" uses 5 decimal places , pads complete output @ least 5 characters, doesn't make sense. specify precision only:

>>> '{:.4f}'.format(4.1) '4.1000'

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