我必須requests.get()
雅虎利用YQL
返回json
對象的兩個網址。我回來了json
對象,我存儲到list()
。然後我循環解析數據並創建一個dic,然後創建一個熊貓數據框架。發生了只有一個列表正在追加到數據框。看起來像在上一次迭代中,第二個列表覆蓋第一個列表。在這一點上,我無法弄清楚如何遍歷列表中的兩個元素append()
。這裏是我的代碼...循環將多個列表追加到數據框python
import requests
import pandas as pd
urls = ['https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.historicaldata%20where%20symbol%20in%20(%22DIA%22%2C%22SPY%22%2C%22IWN%22)%20and%20startDate%20%3D%20%222015-01-01%22%20and%20endDate%20%3D%20%222015-10-31%22&format=json&diagnostics=true&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&callback=',
'https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.historicaldata%20where%20symbol%20in%20(%22DIA%22%2C%22SPY%22%2C%22IWN%22)%20and%20startDate%20%3D%20%222015-11-01%22%20and%20endDate%20%3D%20%222016-08-31%22&format=json&diagnostics=true&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&callback=']
for url in urls:
data = requests.get(url)
data_json = data.json()
quote_list = []
for quote in data_json['query']['results']['quote']:
quote_dic = {'symbol': quote['Symbol'],
'date': quote['Date'],
'volume': quote['Volume'],
'low': quote['Low'],
'high': quote['High'],
'open': quote['Open'],
'close': quote['Close'],
'adj_close': quote['Adj_Close']}
quote_list.append(quote_dic)
quote_df = pd.DataFrame(quote_list)
quote_df.to_csv('stocks.csv')
我需要能夠將整個list()
追加到數據幀。這個代碼的修正是什麼?
爲什麼存儲在列表中的JSON? json本質上是一本字典,可以在不解析或翻譯的情況下加載到字典中。 – zenlc2000
我可以將'json'直接附加到數據框嗎? – Gilbert
但是,我不太熟悉熊貓數據框,根據http://stackoverflow.com/questions/31695108/how-to-append-a-dictionary-to-a-pandas-dataframe它看起來很簡單。 – zenlc2000