Strange invalid syntax Error in python

Question

I have a piece of code that looks completely fine,

def _change_id(self, model, path, it,(old_id, new_id)):

But whenever I try to run it in my terminal python returns, "SyntaxError: invalid syntax"

I tested in Python 2.7.x shell and it worked. Python 3.x does throw an error. For those that see this question, the error indicator points at `(old_id, new_id)` parameter — Trés DuBiel, Jan 18 '16 at 21:33

score 4 · Answer 1 · edited Jan 18 '16 at 22:13

4

The use of the tuple parameter was removed in python 3.0. This caused more issues than it was worth. You can rewrite it this way:

def fun(p1, b_c, p2):
    b, c = b_c

the parameter b_c was a tuple:

fun(1, (1, 2), 3)

edited Jan 18 '16 at 22:13

Ethan Furman

answered Jan 18 '16 at 21:38

Luan Oliveira

score 1 · Answer 2 · answered Jan 18 '16 at 21:37

1

Its called Removal of Tuple Parameter Unpacking (only in python3)

answered Jan 18 '16 at 21:37

Yoav Glazner

score 0 · Answer 3 · answered Jan 18 '16 at 21:37

0

Apparently, tupple parameter unpacking was removed in python 3 as per this link here

Edit: @Yoav and @jonrsharpe beat me to it

answered Jan 18 '16 at 21:37

Trés DuBiel

3 Answers3