Convert args to flat list?
- by Mark
I know this is very similar to a few other questions, but I can't quite get this function to work correctly.
def flatten(*args):
return list(item for iterable in args for item in iterable)
The output I'm looking for is:
flatten(1) -> [1]
flatten(1,[2]) -> [1, 2]
flatten([1,[2]]) -> [1, 2]
The current function, which I from another SO answer doesn't seem to produce correct results at all:
>>> flatten([1,[2]])
[1, [2]]
I wrote the following function which seems to work for 0 or 1 levels of nesting, but not deeper:
def flatten(*args):
output = []
for arg in args:
if hasattr(arg, '__iter__'):
output += arg
else:
output += [arg]
return output
