python - 将highchart刮入python

Question

谁能告诉我如何将highchart数据从以下链接提取到python中？

https://www.ree.es/en/datos/generation/generation-structure

标签： pythonweb-scrapinghighcharts

Answer 1

Try below approach using python - requests simple, straightforward, reliable, fast and less code is required when it comes to requests. I have fetched the API URL from website itself after inspecting the network section of google chrome browser.

What exactly below script is doing:

1. First it will take the API URL which is created using dynamic parameters(all in caps) and do GET request. URL is dynamic you can pass any valid value in the params and the URL is created for you every time you want to fetch something from the chart.

2. After getting the data script will parse the JSON data using json.loads library.

3. Finally it will iterate all over the list of attributes and different values of the chart for ex:- Title, Type, Color, Last updates, percentage etc. you can modify these attributes as per your need.

   import json
   import requests
   from urllib3.exceptions import InsecureRequestWarning
   requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
   
   def scrape_chart_data():
   #### Dynamic Paramters######
   START_DATE = '2020-10-22T00:00'
   END_DATE = '2020-10-29T23:59'
   TIME_TRUNC = 'day'
   CACHED = 'true'
   SYSTEM_ELECTRIC = 'nacional'
   
   URL = 'https://apidatos.ree.es/en/datos/generacion/estructura-generacion?start_date=' + START_DATE + '&end_date=' + END_DATE + '&time_trunc=' + TIME_TRUNC + \
   '&cached=' + CACHED + '&systemElectric=' + SYSTEM_ELECTRIC  # Dynamic URL created using params
   
   response = requests.get(URL,verify = False) # GET API request
   result = json.loads(response.text) # Parse JSON data
   extracted_chart_data = result['included'] # extracted data using GET API call
   
   for idx in range(len(extracted_chart_data)): # iterate over the data and print attributes and values
       print('-' * 100)
       attributes = extracted_chart_data[idx]['attributes'] #attributes
       values = extracted_chart_data[idx]['attributes']['values'] #values
       print('Type : ', attributes['type'])
       print('Title : ', attributes['title'])
       print('Color : ', attributes['color'])
       print('Last Update : ', attributes['last-update'])
       print('Magnitude : ', attributes['magnitude'])
       print('-' * 50 + ' Values of ' + attributes['title'] + ' ' + '-' * 50)        
       for val in range(len(values)):           
           print('Date and Time : ', values[val]['datetime'])
           print('Percentage : ', values[val]['percentage'])
           print('Value : ', values[val]['value'])
       print('-' * 100)
   
   scrape_chart_data()