Python编程基础记一次课堂笔记：for循环&函数编写

Python编程基础，for循环、嵌套for循环(99乘法表) 、函数有参、无参：

list_1 = [1, 2, 3, 4, 5]
i = 0
for item in list_1:
    print("这是一种第三种方式的复杂版：{}".format(list_1[i]) ,end=" ")
    i += 1

for item1 in list_1:
    print("\n第二种方式遍历序列类型的值：{}".format(item1))

for item2 in range(len(list_1)):
    print("第三种方式遍历序列类型的值：{}".format(list_1[item2]),end=" ")

# 元组解包
dict_1 = {"a1": "a2", True: "False", "age": 19}
for key, value in dict_1.items():
    print("\nkey={},value={}".format(key, value))

# function 方法体  == 函数
def func(name):
    for item in name:
        print(item)

func(list_1)

# function 返回return关键字
def multi(a,b):
    """
    :param a:
    :param b:
    :return:
    """
    return a*b
print("两个数的乘积：{}".format(multi(25,10)))

# func.__doc__查看方法体的注释
print(multi.__doc__)