如何在python中使用int迭代字符串列表？ [英] How can I iterate over a list of strings with ints in python?

问题描述

我刚开始使用python和编程进行编程，遇到了以下问题：

I'm new to programming with python and programming in general and got stuck wit the following problem:

b=["hi","hello","howdy"]
for i in b:
    print i

#This code outputs:
hi
hello
howdy

我如何才能使迭代变量成为一个int，因此它可以工作以下方式？

How can I make it so the iterating variable is an int so it works the following way?

b=["hi","hello","howdy"]
for i in b:
    print i

#I want it to output:
0
1
2

推荐答案

Pythonic的方式是 enumerate（）：

The Pythonic way would be with enumerate():

for index, item in enumerate(b):
    print index, item

还有范围（len（b）），但你几乎总是会检索<循环体中code> item ，所以 enumerate（）是大部分时间更好的选择：

There's also range(len(b)), but you almost always will retrieve item in the loop body, so enumerate() is the better choice most of the time:

for index in range(len(b)):
    print index, b[index]

这篇关于如何在python中使用int迭代字符串列表？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！