包装和拆包

下面是一个显示包装和拆包的示例，这里**解包了与它一起使用的字典，并将字典中的项作为关键字参数传递给函数。所以写“fun（1，** d）”相当于写“fun（1，b = 4，c = 10）”。

# A Python program to demonstrate both packing and

# unpacking.

# A sample python function that takes three arguments

# and prints them

def fun1(a, b, c):

print(a, b, c)

# Another sample function.

# This is an example of PACKING. All arguments passed

# to fun2 are packed into tuple *args.

def fun2(*args):

# Convert args tuple to a list so we can modify it

args = list(args)

# Modifying args

args[0] = 'Geeksforgeeks'

args[1] = 'awesome'

# UNPACKING args and calling fun1()

fun1(*args)

# Driver code

fun2('Hello', 'beautiful', 'world!')

输出：

（Geeksforgeeks，太棒了，世界！）