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# pandas.Series.str.isalnum

Series.str.isalnum()

  Check whether all characters in each string are alphanumeric.

  This is equivalent to running the Python string method `str.isalnum()` for each element of the Series/Index. If a string has zero characters, `False` is returned for that check.

  Returns:
    Series or Index of bool

      Series or Index of boolean values with the same length as the original Series/Index.

  See also

  `Series.str.isalpha`

    Check whether all characters are alphabetic.

  `Series.str.isnumeric`

    Check whether all characters are numeric.

  `Series.str.isdigit`

    Check whether all characters are digits.

  `Series.str.isdecimal`

    Check whether all characters are decimal.

  `Series.str.isspace`

    Check whether all characters are whitespace.

  `Series.str.islower`

    Check whether all characters are lowercase.

  `Series.str.isascii`

    Check whether all characters are ascii.

  `Series.str.isupper`

    Check whether all characters are uppercase.

  `Series.str.istitle`

    Check whether all characters are titlecase.

  Examples

      >>> s1 = pd.Series(["one", "one1", "1", ""])
      >>> s1.str.isalnum()
      0     True
      1     True
      2     True
      3    False
      dtype: bool

  Note that checks against characters mixed with any additional punctuation or whitespace will evaluate to false for an alphanumeric check.

      >>> s2 = pd.Series(["A B", "1.5", "3,000"])
      >>> s2.str.isalnum()
      0    False
      1    False
      2    False
      dtype: bool