func_args.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from collections import Iterable


def my_abs(x):
    if not isinstance(x, (int, float)):
        raise TypeError('bad operand type')
    if x >= 0:
        return x
    else:
        return -x

def power(x, n=2):
    s = 1
    while n > 0:
        s *= x
        n -= 1
print(pow(2, 4))

def add_end(L=None):
    if L is None:
        L = []
    L.append('END')
    return L

def calc(*numbers):
    sum = 0
    for n in numbers:
        sum += n * n
    return sum
L = [1, 2]
print(calc(*L))

def f1(a, b, c=0, *args, **kw):
    print('a=', a, 'b=', b, 'c=', c, 'args=', args, 'kw=', kw)

def f2(a, b, c=0, *, d, **kw):
    print('a=', a, 'b=', b, 'c=', c, 'd=', d, 'kw=', kw)

def print_scores(**kw):
    print('      Name  Score        ')
    print('------------------')
    for name, score in kw.items():
        print('%10s  %d' % (name, score))
    print()

print_scores(Adam=99, Lisa=88, Bart=77)

data = {
        'Adam Lee': 99,
        'Lisa S': 88,
        'F.Bart': 77
        }

print_scores(**data)

def print_info(name, *, gender, city='Beijing', age):
    print('Personal Info')
    print('---------------')
    print('   Name: %s' % name)
    print(' Gender: %s' % gender)
    print('   City: %s' % city)
    print('    Age: %s' % age)
    print()

print_info('Bob', gender='male', age=20)
print_info('Lisa', gender='female', city='Shanghai', age=18)