Python+selenium Study notes 5

This note is mainly taken from the tutorial on the Python website, plus a personal understanding

1. In interactive mode, the underscore ' _ ' can also represent the result of the previous step

2. Quote escaping problem.

The rule is that the quotation marks in a string are the same as the quotation marks in the string, and the quotes in the string need to be escaped. The difference is not required.

The last example looks unchanged, plus print () is different.

The difference between print () and no print ():

Print () function produces a more readable output, by omitting the enclosing quotes and by printing escaped and special Cha Racters:

\ n line break

3. List of lists

① Connect with a plus sign ("+")

② replacing elements

③ add element Append () to add after the last element

4. While loop

Python+selenium Study notes 5