python-nav-beginning-of-defun-regexp

python-nav-beginning-of-defun-regexp is a variable defined in `python.el'.
Its value is

"^[[:space:]]*\\_<\\(?:class\\|def\\)\\_>[[:space:]]+\\([_[:alpha:]][_[:word:]]*\\)"

Documentation:
Regexp matching class or function definition.
The name of the defun should be grouped so it can be retrieved
via `match-string'.