consider this example?
p = [1,2,3,4], (1,2,3), set([1,2,3])]
instead of checking for each types like
for x in p:
if isinstance(x, list):
xxxxx
elif isinstance(x, tuple):
xxxxxx
elif isinstance(x, set):
xxxxxxx
Is there some equivalent for the following:
for element in something:
if isinstance(x, iterable):
do something
You could try using the Iterable ABC from the collections module:
In [1]: import collections
In [2]: p = [[1,2,3,4], (1,2,3), set([1,2,3]), 'things', 123]
In [3]: for item in p:
...: print isinstance(item, collections.Iterable)
...:
True
True
True
True
False
Iterable from collections is deprecated and will break in Python 3.8+. Instead, import from collections.abc, e.g. from collections.abc import Iterable.
collections.abc.Iterable as a generic type (e.g., Iterable[int]) in Python 3.8 or earlier, you must also do from __future__ import annotations
collections.abc.Iterable with typing.Iterable.collections.abc from typing is deprecated; importing them from collections.abc is the right way to do it in Python 3.9+, and in Python 3.7+ with from __future__ import annotations.You can check if the object has __iter__ attribute in it, to make sure if it is iterable or not.
a = [1, 2, 3]
b = {1, 2, 3}
c = (1, 2, 3)
d = {"a": 1}
f = "Welcome"
e = 1
print (hasattr(a, "__iter__"))
print (hasattr(b, "__iter__"))
print (hasattr(c, "__iter__"))
print (hasattr(d, "__iter__"))
print (hasattr(f, "__iter__") or isinstance(f, str))
print (hasattr(e, "__iter__"))
Output
True
True
True
True
True
False
Note: Even though Strings are iterable, in python 2 they dont have __iter__, but in python 3 they have it. So, in python 2 you might want to have or isinstance(f, str) as well
__iter__.
>>> str.__iter__ <slot wrapper '__iter__' of 'str' objects>