StringMethods.lower() → T[source]#

Convert strings in the Series/Index to lowercase.

Equivalent to str.lower().

Examples:

>>> import bigframes.pandas as bpd

>>> s = bpd.Series(['lower',
...                 'CAPITALS',
...                 'this is a sentence',
...                 'SwApCaSe'])
>>> s.str.lower()
0                 lower
1              capitals
2    this is a sentence
3              swapcase
dtype: string
Returns:

Series with lowercase.

Return type:

bigframes.series.Series