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Python 避免嵌套 For 循环

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2022-01-01

Python Avoid Nested For Loop(Python 避免嵌套 For 循环)

本文介绍了Python 避免嵌套 For 循环的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我是 Python 编程的新手，我正在从事一个宠物项目.

I am new to python programming and I am getting my hands dirty by working on a pet project.

我尝试了很多方法来避免这些嵌套的 for 循环，但都没有成功.

I have tried a lot to avoid these nested for loops, but no success.

避免嵌套 for 循环

从 python 中的 for 循环返回值

import requests
import json

r = requests.get('https://api.coinmarketcap.com/v1/ticker/')
j = r.json()


for item in j:
    item['id']
    n = item['id']
    url = 'https://api.coinmarketcap.com/v1/ticker/%s' %n
    req = requests.get(url)
    js = req.json()
    for cool in js:
        print n
        print cool['rank']

如果需要更多信息，请告诉我.

Please let me know if more information is needed.

推荐答案

您的第一个请求已经为您提供了所需的一切.

Your first request already gets you everything you need.

import requests
import json

response = requests.get('https://api.coinmarketcap.com/v1/ticker/')
coin_data = response.json()

for coin in coin_data:
    print coin['id'] # "bitcoin", "ethereum", ...
    print coin['rank'] # "1", "2", ...
    print coin['price_usd'] # "2834.75", "276.495", ...

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