Python星号*的更多用法

>>> print('a'*10)
aaaaaaaaaa
>>> print([1,2,3]*3)
[1, 2, 3, 1, 2, 3, 1, 2, 3]

def print_values(*args):
    for arg in args:
        print(arg)
        
print_values(1,2,3,4)

输出>>
1
2
3
4

def eg(**kwargs):
    for k,v in kwargs.items():
        print(f'{k}={v}')

>>> eg(a=1,b=2)
a=1
b=2

a, *b = [1, 2, 3, 4]
print(a)  # 输出: 1
print(b)  # 输出: [2, 3, 4]

def func(a, b, c):
    print(a, b, c)

args = (1, 2, 3)
func(*args)  # 输出: 1 2 3

def func(a, b, c):
    print(a, b, c)

kwargs = {'a': 1, 'b': 2, 'c': 3}
func(**kwargs)  # 输出: 1 2 3

list1=[1,2,3]
tuple1=(4,5,6)
merged=[*list1,*tuple1]
#merged=[1,2,3,4,5,6] 这里解包之后到[]里了

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
merged = {**dict1, **dict2}
print(merged)  # 输出: {'a': 1, 'b': 3, 'c': 4}