cudf.core.column.string.StringMethods.isalpha

StringMethods.isalpha() → SeriesOrIndex

Check whether all characters in each string are alphabetic.

This is equivalent to running the Python string method str.isalpha() 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

isalnum

Check whether all characters are alphanumeric.

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.isalpha()
0     True
1    False
2    False
3    False
dtype: bool