Function

1. Do not use mutable objects as an argument

• Don’t

def some(hello, value=[]):

    value.append(3)

• Good

def some(hello, value=None):

    if value is None:
        value = []

    value.append(3)

2. Do not return more than one variable type from function call.

3. Do not use global statement.

4. Return more than one result using nameturple.

from collections import namedtuple

def fun():
    name = namedtuple("name", ["first", "middle", "last"])
    return name("nick", "sung", "hello")

test_name = fun()

print(test_name.first, test_name.middle, test_name.last)