pandas.Series.str.isnumeric
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Series.str.isnumeric()[source]
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Check whether all characters in each string in the Series/Index are numeric. Equivalent to str.isnumeric().Returns: - 
is : Series/array of boolean values
 
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Licensed under the 3-clause BSD License.
    https://pandas.pydata.org/pandas-docs/version/0.23.4/generated/pandas.Series.str.isnumeric.html