https://techdoku.nogafam.es/ 2026-04-27T10:29:24+00:00 https://techdoku.nogafam.es/ https://techdoku.nogafam.es/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2020-02-14T13:15:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://techdoku.nogafam.es/doku.php?id=docu:csheet:sysadm:script:python:argparse&rev=1581686121&do=diff How to use argparse on python3 The goal is to provide to your application, a strong command line options support, and be easy to program as well as to use it. # basic initialization import argparse parser = argparse.ArgumentParser(description='The description of your handy tool') # create a mutually exclusive group of parameters group = parser.add_mutually_exclusive_group(required=True) group.add_argument('--ping', action='store_true', help='(example) a flag to ping your application') grou… text/html 2022-01-16T02:13:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://techdoku.nogafam.es/doku.php?id=docu:csheet:sysadm:script:python:html_scraping&rev=1642299224&do=diff Simple guide for HTML Web Scraping Install the packages required. # Debian-based apt install python3-bs4 apt install python3-requests # using pip pip install bs4 pip install requests Sample code for parsing: # obtain html using requests response = requests.get('http://example.org') html = BeautifulSoup(response.text, 'html.parser') # get page title print(html.title) # select using DOM selector (list of elements) elements = html.select('#your-id .your-class a[href="value"]') # exam… text/html 2022-01-05T13:48:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://techdoku.nogafam.es/doku.php?id=docu:csheet:sysadm:script:python:read_csv&rev=1641390530&do=diff Read a CSV file to JSON, using the first rows as field names definition If you just want to create your own code from scratch, with the very basic .csv reading code, this is the snippet you need: def read_csv_data(fname): with open(fname) as csvfile: reader = csv.reader(csvfile, delimiter=',') for row in reader: print(row) text/html 2022-01-05T13:45:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://techdoku.nogafam.es/doku.php?id=docu:csheet:sysadm:script:python:sort_by_key&rev=1641390352&do=diff Sort an Array by a key value In case you want an array [] ordered by a numeric value in items wanted by key: # numeric ascending order data = sorted(data, key=lambda x: x['yourkey']) # numeric descending order data = sorted(data, reverse=True, key=lambda x: x['yourkey'])