I have code like this in a lot of controllers:
def f(a, b):
# Make sure that a is a list.
if not isinstance(a, list):
a = [a]
for x in a:
....
I have to make sure that a is a list, not a string, before I iterate
over it.
This is another common pattern:
def g(**kwargs):
a = kwargs.get('a', [])
if not isinstance(a, list):
a = [a]
It's roughly the same thing, but a is potentially a key in kwargs.
Is there some way to clean this code up?
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