# 函数
def functions(x): """ functions test """ x += 1 y = x ** 2
return x, y
functions = functions(x=5) # print(functions)
""" def: 定义函数的关键字
function: 函数名
(): 参数,多个参数用逗号隔开
x += 1, y = x**2: 代码块的处理逻辑
return: 定义返回值 """
# 例子
def function_1(): # num = int(input('请输入密码:'))
num = 123 yes = '密码正确!' no = '密码错误,请重新输入!'
if num != 123: return no return yes
function_1 = function_1() print(function_1) # 函数参数 # 形参
def function_2(x, y):
count_2 = x ** y return count_2
function_2 = function_2(3, 2) print(function_2) # 实参一一对应
def function_3(x, y, z): return x, y, z
function_3 = function_3(x=1, y=3, z=2) print(function_3) # 参数组 **字典 *列表
def function_4(x, *y): return x, y def function_5(x, **y): return x, y # function_4 = function_4(1, 2, 3, 4, 5)
function_4_1 = function_4(1, {'1': '1'}, {'2': '2'})
function_5 = function_5(1, name='Jack', age=18, adders='China') # print(function_4)
print(function_4_1) print(function_5) # def functions(*, *args, **kwargs)
def function_6(x, *y, **z): return x, y, z
function_6 = function_6(1, 2, 3, 4, 5, 6, a='a', b='b') print(function_6)
