Python(circle

"""
什么叫循环：不停做同样的事情
python中循环的语法：
for 临时变量 in 可迭代的对象(iterable):
    statement




while

"""
#值 in list

for i in [1, 2, 3, 4]:
    print(i)
dict_data = {1: 2, 2: 3}
for i in dict_data:
    print(i)

for i in dict_data.keys():
    print(i)
#enumerate

for i in enumerate([1, 2, 3, 4]):
    print(i)
for i, j in enumerate([1, 2, 3, 4]):
    print(i, j)

# print(1)
# print(1)
# print(1)