Your first unit test using pytest

The data file containing housing area and prices uses comma as a thousands separator, as you can see in the IPython Shell.

Therefore, the return value of row_to_list() contains strings with commas. For example, calling row_to_list("2,081\t314,942\n") would return ["2,081", "314,942"]. Try it out for yourself in the Shell!

These strings should be converted into integers so that one can do numerical computation.

The convert_to_int() function takes a comma separated integer string as argument, and returns the integer. For example, calling convert_to_int("2,081") would return 2081.

This function is defined in the file preprocessing_helpers.py. But it is not known whether it is working properly.

Import the pytest package.

Take Hint (-7 XP)

Exercise

Your first unit test using pytest

Instructions 1/4