python - 循环遍历字典python

Question

我正在按照这个 yelp API 教程进行操作:http://letstalkdata.com/2014/02/how-to-use-the-yelp-api-in-python/

我有下面的代码。我基本上试图以有意义的方式分离出结果字典的元素。现在我刚刚获得一整套数据流...我如何循环遍历字典，使其一个接一个地清晰地呈现所有键和值？

import rauth
import time

def main():
    locations = [(39.98,-82.98),(42.24,-83.61),(41.33,-89.13)]
    api_calls = []
    for lat,long in locations:
        params = get_search_parameters(lat,long)
        api_calls.append(get_results(params))
        #Be a good internet citizen and rate-limit yourself
        time.sleep(1.0)

    ##Do other processing

    for key in api_calls:
        print key

def get_results(params):

    #Obtain these from Yelp's manage access page
    consumer_key = "CONSUMER_KEY_HERE"
    consumer_secret = "CONSUMER_SECRET_HERE"
    token = "TOKEN_HERE"
    token_secret = "TOKEN_SECRET_HERE"

    session = rauth.OAuth1Session(
        consumer_key = consumer_key
        ,consumer_secret = consumer_secret
        ,access_token = token
        ,access_token_secret = token_secret)

    request = session.get("http://api.yelp.com/v2/search",params=params)

    #Transforms the JSON API response into a Python dictionary
    data = request.json()
    session.close()

    return data

def get_search_parameters(lat,long):
    #See the Yelp API for more details
    params = {}
    params["term"] = "restaurant"
    params["ll"] = "{},{}".format(str(lat),str(long))
    params["radius_filter"] = "2000"
    params["limit"] = "10"

    return params

if __name__=="__main__":
    main()

Answer 1

api_calls 是一个字典列表。每个字典都有一个键 businesses，它引用一个字典列表，每个字典对应该位置的每个企业。

您想要迭代 API 调用结果列表。对于每个条目，迭代企业列表并打印键 name 和 phone

的值

for location in api_calls:
     for business in location['businesses']:
         print business['name'], business['phone']

输出:

Creole Kitchen 6143723333
Los Potosinos 6148876895
Royal Fish, Shrimp, & Chicken 6144296002
Shades Restaurant 6142916555
Zanzibar Brews 6147580111
Grass Skirt Tiki Room 6144293650
That Food Truck 6149463797
Los Potosinos 6148876895
Asian Wok II 6142527661
Cafe On Long 6142524552
Beezy's 7344859625
Sidetrack 7344831035
The Bomber Restaurant 7344820550
Maìz Mexican Cantina 7343406010
Bona Sera Cafe 7343406335
Red Rock Downtown Barbecue 7343402381
The Wurst Bar 7344856720
ABC Microbrewery 7344802739
Cafe Ollie 7344828050
Aubree's Pizzeria & Grill 7344838888
Brandys 8152201744
Mark Allen's American Kitchen 8152200642
Bayou Express 8157808651
Demilio's Italian Deli 8152244808
Fourth Street Bakery & Cafe 8152241927
Peru Pizza House Restaurant 8152237408
Right Spice Supper Club 8152239824
Maples Supper Club the 8152231938
Liberty Family Restaurant 8152243240
Pizzas by Marchelloni 8152201564