In [1]:
from operator import add, sub as subtract, mul as multiply, floordiv as divide
from collections import OrderedDict

In [2]:
operators = OrderedDict((
    ('+', add),
    ('-', subtract),
    ('*', multiply),
    ('/', divide),
))

In [3]:
', '.join(operators)


Out[3]:
'+, -, *, /'

In [4]:
for x in operators:
    print(x)


+
-
*
/

In [5]:
list(operators)


Out[5]:
['+', '-', '*', '/']