June 15, 2011
2:28 a.m.
Jan Kaliszewski dixit (2011-06-14, 12:17):
It's obvious that such a repetition must be prohibited (SyntaxError, at compile time):
def sth(my_var, **, my_var): "do something"
Of course, I ment: def sth(my_var, **, my_var='foo'): "do something"
But in case of:
def sth(*args, **kwargs, my_var='foo'): "do something"
-- should 'my_var' in kwargs be allowed? (it's a runtime question) There is no real conflict here, so at the first sight I'd say: yes.
On second thought: no, such repetitions also should *not* be allowed. If a programmer, by mistake, would try to specify the argument value in a call, an explicit TypeError should be raised -- otherwise it'd become a trap (especially for beginners and absent-minded programmers). Regards. *j