Clarify that the output of TextCalendar.formatmonth() and TextCalendar.formatyear() for custom instances won't be influenced by calls to the module global setfirstweekday() function. Fixes #2018.
Clarify that the output of TextCalendar.formatmonth() and
TextCalendar.formatyear() for custom instances won't be influenced by calls
to the module global setfirstweekday() function. Fixes #2018.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator