The previous page is sending you to https://www.vitalsource.com/products/learn-python-the-hard-way-zed-a-shaw-v9780133124347?duration=perpetual&srsltid=AfmBOoqxCS7bNKF9lK6kBo2Tkwx3y2uFBsXpF5tEfwTHz0pKXmLeJrk8bPc.

 If you do not want to visit that page, you can return to the previous page.