49.拆包，交换变量的值

def get_my_info():
    high = 178
    weight = 100
    age = 18
    return high, weight, age


# result = get_my_info()
# print(result)

my_high, my_weight, my_age = get_my_info()
print(my_high)
print(my_weight)
print(my_age)

  In [17]: a, b = (11, 22)
  In [18]: a
  Out[18]: 11
  In [19]: b
  Out[19]: 22

  In [20]: a, b = [11, 22]
  In [21]: a
  Out[21]: 11
  In [22]: b
  Out[22]: 22

  In [23]: a, b = {"m":11, "n":22}  # 取出来的是key，而不是键值对
  In [24]: a
  Out[24]: ‘m‘
  In [25]: b
  Out[25]: ‘n‘

# 第1种方式
# a = 4
# b = 5
# c = 0
#
# c = a
# a = b
# b = c
#
# print(a)
# print(b)

# 第2种方式
# a = 4
# b = 5
# a = a+b  # a=9, b=5
# b = a-b  # a=9, b=4
# a = a-b  # a=5, b=4
# print(a)
# print(b)

# 第3种方式
a, b = 4, 5
a, b = b, a

print(a)
print(b)

# 比较python的写法
# 01:
# 名字 年龄 学号
# my_name = "小明"
# my_age = 18
# my_no = "007"
# 优化
# 变量数量和数值的数量必须一致 而且需要位置一一对应
my_name, my_age, my_no = "小明", 18, "007"

# 02:
a = 5
# if a >= 0 and a  <= 10:
#     pass
# # 优化
if 0 <= a <= 10:
    pass

# 拆包
# 01:
# 定义一个列表
# my_list = ["小明", 18, "007"]
#
# print(my_list[0])
# print(my_list[1])
# print(my_list[2])
# 拆包
my_name, my_age, my_no = ["小明", 18, "007"]
print(my_name)    

# 02:
# 同事定义了一个元组
my_tuple = (123, 3.14)
# 使用下标索引
# my_tuple[0]

# 拆包
num1, num2 = my_tuple
print(num2)

# 03:
def deal_info(name, age):
    # 定义两个变量
    my_name = "我的名字叫做" + name
    my_age = "我的年龄为%d岁" % age
    return my_name, my_age

new_name, new_age = deal_info("小明", 18)
print(new_name)

# str list tuple
a, b = "ab"
print(b)

# 字典
name, age = {"name": "小明", "age": 19}
print(name)

# 集合
v1, v2 = {1, 3}
print(v2)
# range