Python基础-for循环

1.for 指定遍历

for  i in rang(50,100,2):   # 2 为步长
      print (i)     #输出：50 52 54 ~ 

2.for 不同遍历

list = [1,2,3,4]
tuple = (5,6,7,8)
dict = {"name":"python","age":18}
col = {"a","b","c"}

#字典默认遍历得到的是键
#遍历字典里面的值
for i in dict:
      print (dict[i])  #输出: python 18