enumerate()枚举函数

# 作用就是：将可迭代对象中的元素和索引同时取出
seq = ['one', 'two', 'three']
for i, element in enumerate(seq):
    print('index:element --- {}: {}'.format(i, element))


# start 说明索引起始的位置
seq = ['one', 'two', 'three']
for i, element in enumerate(seq, start=1):
    print('index:element --- {}: {}'.format(i, element))

index:element --- 0: one
index:element --- 1: two
index:element --- 2: three

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index:element --- 1: one
index:element --- 2: two
index:element --- 3: three