Mastering pandas - Second Edition

upper(), lower(), capitalize(), title(), and swapcase()

String methods such as upper(), lower(), capitalize(), title(), and swapcase() help when we wish to convert all the string elements into an entire series. The upper and lower methods convert the entire string into uppercase or lowercase. The following command shows converting a series into uppercase:

sample_df["Movie"].str.upper()

The following is the output:

Converting a series into uppercase

The following command shows converting a series into lowercase:

sample_df["Movie"].str.lower()

The following is the output:

Converting a series into lowercase

The capitalize() method converts the ...