Use title case on text in polars

to_titlecase

You have a table with authors in one column and the books they wrote in another. However, the book titles are all in lowercase, which is not the standard formatting for book titles.

shape: (4, 2)

Author	Book
str	str
"Harper Lee"	"to kill a mocking bird"
"F. Scott Fitzgerald"	"this side of paradise"
"Haruki Murakami"	"men without women"
"Binwell Sinyangwe"	"quills of desire"

Use title case

You can format the book titles properly in the dataframe using the Polars expression to_titlecase like this:

(df
 .with_columns(pl.col('Book').str.to_titlecase())
 )

shape: (4, 2)

Author	Book
str	str
"Harper Lee"	"To Kill A Mocking Bird"
"F. Scott Fitzgerald"	"This Side Of Paradise"
"Haruki Murakami"	"Men Without Women"
"Binwell Sinyangwe"	"Quills Of Desire"

Learn more ways to use Polars in my Polars course.