4.7.2. args, kwargs

1. *args

def print_args(*args):
    print(args)
    for x in args:
        print(x)

print_args(100, True, 'leehojun')

(100, True, 'leehojun')
100
True
leehojun

2. **kwargs

def print_kwargs(a, **kwargs):
    print(a)
    print(kwargs)
    for i in kwargs:
        print(i)

print_kwargs(100, name='leehojun', age='10')

100
{'name': 'leehojun', 'age': '10'}
name
age

3. *args와 **kwargs 응용

def print_args_kwargs(*args, **kwargs):
    print('args:', args)
    for x in args:
        print(x)
    print('kwargs:', kwargs)
    for x in kwargs:
        print(x)
        print(kwargs[x])

print_args_kwargs(100, True, 'leehojun')
print('--------')
print_args_kwargs(score=100, name='leehojun', age='10')
print('--------')
print_args_kwargs(100, True, 'leehojun', score=100, name='leehojun', age='10')
#print('--------')
# print_args_kwargs(100, score=100, True, name='leehojun', 'leehojun', age='10')

args: (100, True, 'leehojun')
100
True
leehojun
kwargs: {}
--------
args: ()
kwargs: {'score': 100, 'name': 'leehojun', 'age': '10'}
score
100
name
leehojun
age
10
--------
args: (100, True, 'leehojun')
100
True
leehojun
kwargs: {'score': 100, 'name': 'leehojun', 'age': '10'}
score
100
name
leehojun
age
10

def print_args_kwargs(*args, **kwargs):
    print('args:', args)
    for x in args:
        print(x)
    print('kwargs:', kwargs)
    for x in kwargs:
        print(x)
        print(kwargs[x])

inputlist=[100, True, 'leehojun']
inputdic={'score':100, 'name':'leehojun', 'age':'10'}
print_args_kwargs(*inputlist)
print('--------')
print_args_kwargs(**inputdic)
print('--------')
print_args_kwargs(*inputlist, **inputdic)

args: (100, True, 'leehojun')
100
True
leehojun
kwargs: {}
--------
args: ()
kwargs: {'score': 100, 'name': 'leehojun', 'age': '10'}
score
100
name
leehojun
age
10
--------
args: (100, True, 'leehojun')
100
True
leehojun
kwargs: {'score': 100, 'name': 'leehojun', 'age': '10'}
score
100
name
leehojun
age
10

4. 기타 *의 활용 방법

one, two, *three = 1,2,3,4,5
print(one, two, three)

1 2 [3, 4, 5]