cudf.core.column.string.StringMethods.isalnum#

StringMethods.isalnum() → SeriesOrIndex#

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.

Equivalent to: isalpha() or isdigit() or isnumeric() or isdecimal()

Returns

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

See also

isalpha: Check whether all characters are alphabetic.
isdecimal: Check whether all characters are decimal.
isdigit: Check whether all characters are digits.
isinteger: Check whether all characters are integer.
isnumeric: Check whether all characters are numeric.
isfloat: Check whether all characters are float.
islower: Check whether all characters are lowercase.
isspace: Check whether all characters are whitespace.
isupper: Check whether all characters are uppercase.

Examples

>>> import cudf
>>> s1 = cudf.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 = cudf.Series(['A B', '1.5', '3,000'])
>>> s2.str.isalnum()
0    False
1    False
2    False
dtype: bool