zfill(self, width)
Strings in the Series/Index are padded with '0' characters on the left of the string to reach a total string length :None:None:`width`. Strings in the Series/Index with length greater or equal to :None:None:`width` are unchanged.
Differs from str.zfill
which has special handling for '+'/'-' in the string.
Minimum length of resulting string; strings with length less than :None:None:`width` be prepended with '0' characters.
Pad strings in the Series/Index by prepending '0' characters.
Series.str.center
Fills both sides of strings with an arbitrary character.
Series.str.ljust
Fills the right side of strings with an arbitrary character.
Series.str.pad
Fills the specified sides of strings with an arbitrary character.
Series.str.rjust
Fills the left side of strings with an arbitrary character.
>>> s = pd.Series(['-1', '1', '1000', 10, np.nan])
... s 0 -1 1 1 2 1000 3 10 4 NaN dtype: object
Note that 10
and NaN
are not strings, therefore they are converted to NaN
. The minus sign in '-1'
is treated as a regular character and the zero is added to the left of it ( str.zfill
would have moved it to the left). 1000
remains unchanged as it is longer than :None:None:`width`.
>>> s.str.zfill(3) 0 0-1 1 001 2 1000 3 NaN 4 NaN dtype: objectSee :
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