strings.center(a, width, fillchar='')
Return a copy of a with its elements centered in a string of length width.
Parameters:aarray-like, with StringDType, bytes_, or str_ dtypewidtharray_like, with any integer dtypeThe length of the resulting strings, unless width<str_len(a).
fillchararray-like, with StringDType, bytes_, or str_ dtypeOptional padding character to use (default is space).
Returns:outndarrayOutput array of StringDType, bytes_ or str_ dtype, depending on input types
Notes
While it is possible for a and fillchar to have different dtypes, passing a non-ASCII character in fillchar when a is of dtype “S” is not allowed, and a ValueError is raised.
Examples
>>> importnumpyasnp>>> c=np.array(['a1b2','1b2a','b2a1','2a1b']);carray(['a1b2', '1b2a', 'b2a1', '2a1b'], dtype='<U4')>>> np.strings.center(c,width=9)array([' a1b2 ', ' 1b2a ', ' b2a1 ', ' 2a1b '], dtype='<U9')>>> np.strings.center(c,width=9,fillchar='*')array(['***a1b2**', '***1b2a**', '***b2a1**', '***2a1b**'], dtype='<U9')>>> np.strings.center(c,width=1)array(['a1b2', '1b2a', 'b2a1', '2a1b'], dtype='<U4')