Issue on page /01_intro/01_01-02_introduction_to_python.html

[P.T. Evans]

Typo in last sentence of 2nd paragraph in section 1.1.1.2:

"By >have< a strong command of the technical aspects of a project,"

[William Mattingly]

Thanks again for catching this! And sorry for the delay in addressing these. There were several issues when this was being prepared for print and I needed to keep the publisher's fork separate.