10.5 函数参数定义_默认值参数

def fun(a,b=10):
    print(a,b)
#函数的调用
fun(100)
fun(20,30)

print('hello',end='\t')    #end实际默认值为\n
print('world')

E:\PycharmProjects\pythonProject\venv\Scripts\python.exe E:/PycharmProjects/pythonProject/demon1/demo27.py
100 10
20 30
hello    world

进程已结束,退出代码0