Padding at the end of a string in polars

pad_end

You have part numbers for your products, and you want to ensure they all have the same length, meaning they contain the same number of characters. Below is a dataframe that shows part numbers of varying lengths.

shape: (4, 1)

Part_Num
str
"JV24"
"SA1978"
"VX4"
"Z5"

Make values same length

To add zeros at the end of each value in Part_Num that has fewer than six characters, use the Polars expression pad_end as follows:

(df
 .with_columns(pl.col('Part_Num').str.pad_end(6, '0'))
 )

shape: (4, 1)

Part_Num
str
"JV2400"
"SA1978"
"VX4000"
"Z50000"

Now the values all have the same length with six characters.

Check out my Polars course and advance your analysis skills.