使用循环遍历字典和set集合

一、遍历字典

定义一个学生字典

stu = {"name": "zutuanxue_com", "age": 18, "sex": "男", "height": 173.5, "weight":80, "id": 1}

• for key in stu

  遍历字典的key

  for key in stu:
      print(key, stu[key])
  

• for value in stu.values()

  遍历字典元素

  for value in stu.values():
      print(value)
  

• for key, value in stu.items()

  遍历字典的Key和Value

  for key, value in stu.items():
      print(key, value)
  

• for index, key in enumerate(stu)

  枚举遍历，可以得到类似下标的顺序值，但是注意，字典是无序的

  for index, key in enumerate(stu):
      print(index, key)
  

二、遍历set集合

定义一个集合

s = set([1,2,3,4,5])

• for key in s

  for key in s:
      print("--------", key)
  

• for index, key in enumerate(s)

  for index, key in enumerate(s):
      print(index, key)