Support regular expressions in step definitions

PyCharm supports regular expressions of Python flavor. As such, it uses the Python's re module.

When editing source code in a step definition file, note that it is possible to specify data in a step definition as constants, or as regular expressions.

To make PyCharm perceive the entered code as a regular expression, ensure the following line is added to the source code of a step definition:

So doing, the expressions used in step definitions are perceived as regular expressions:

If the matcher is not used, then the expressions in quotes are perceived as strings: