Exercise

Extracting string patterns

The Length column in the hiking dataset is a column of strings, but contained in the column is the mileage for the hike. We're going to extract this mileage using regular expressions, and then use a lambda in pandas to apply the extraction to the DataFrame.

Instructions

100 XP

Search the text in the length argument for numbers and decimals using an appropriate pattern.
Extract the matched pattern and convert it to a float.
Apply the return_mileage() function to each row in the hiking["Length"] column.