Perl and python use unescaped parenthesis to capture text, and escaped parenthesis to match literal text. Sed, awk, emacs, grep and vi use escaped parenthesis to capture text. Use the anchors "^" to match the beginning of a line, and "$" to match the end.
Apr 06, 2019 · The re module is used to write regular expressions (regex) in Python. To load this module, we need to use the import statement. The following line of code is necessary to include at the top of your code: import re. In order to use a tool from the regular expression module, it is necessary to prefix it with the module name.