This refactoring aims to flip the value of a Boolean variable and all its usages from True to False and vice versa.
def foo(): abc = True return abc
def foo(): abc = False return not abc
To invert a Boolean variable, follow these steps
Place the caret at the name of a Boolean variable.
In the dialog that opens, click Preview to view the suggested changes in the Find tool window, or Refactor to invert the detected occurrences silently.