167_func_extra_useful_stuff.py

# what are doc strings
# how to write docstring
# how to see docstrings
# what is help function

def add(a,b):
    '''this function takes 2 numbers and return there sum'''
    return a+b

print(add.__doc__)

# len, sum, max, min, sorted
print(len.__doc__)

# sum
print(sum.__doc__)
# print(help(sum))