dfMileage = dfMileageapplylambda x floatxsplit0

This code snippet takes a column 'Mileage' from a pandas dataframe 'df', and applies a lambda function to each value in that column.

The lambda function splits the string value at each space character, extracts the first substring (i.e. the number), and converts it to a float.

The resulting float value is then assigned back to the 'Mileage' column in the dataframe.

This code is useful when dealing with data that has string values representing numerical data, such as '10 kmpl' or '20 mpg'. By extracting the numerical value and converting it to a float, the data can be more easily analyzed or used in calculations