enumerate

enumerate

• 跟zip功能比较像
• 对可迭代对象里的每一元素，配上一个索引，然后所有和内容构成tuple元组类型

# enumerate 案例1

l1 = [11,22,33,44,55]

em = enumerate(l1)

l2 = [i for i in em]
print(l2)

[(0, 11), (1, 22), (2, 33), (3, 44), (4, 55)]

em = enumerate(l1, start=100)

l2 = [i for i in em]
print(l2)

[(100, 11), (101, 22), (102, 33), (103, 44), (104, 55)]