ternary operator with unpacking

[joaomcteixeira]

Hello,
After using ternary operators extensively I am getting lost in this case. It took me a couple of hours to understand why I was getting bugged, and though I've identified the cause I can't understand why this example works like this.

# pretty clear
a = [("1", "2"), ("", "")]
b, c = list(zip(*a))
print(b)
print(c)
('1', '')
('2', '')

# here I would expect the same as before, however...
a = [("1", "2"), ("", "")]
b, c = list(zip(*a)) if True else [""], [""]
print(b)
print(c)
[('1', ''), ('2', '')]
['']

# this result is expected but why it differs from the second?
a = [("1", "2"), ("", "")]
b, c = list(zip(*a)) if True else ([""], [""])
print(b)
print(c)
('1', '')
('2', '')

Would someone be willing to comment on this?

EDIT: after posting the thread and staring at it, a spark came... ternary operator ended with the comma... so [""] was passed to c even when condition evaluates to True