fetch_wiki.py

from bs4 import BeautifulSoup as bs
import wikipediaapi
import sys
import re
import pypandoc

def page_titles_of_category(cat_page):
        """
        recursively
        """
        titles = []
        for member in cat_page.categorymembers.values(): 
            if member.ns == wikipediaapi.Namespace.MAIN: 
                titles.append(member.title)
            elif member.ns == wikipediaapi.Namespace.CATEGORY: 
                titles += page_titles_of_category(member)
        return titles

def wikipedia(): 
    wiki = wikipediaapi.Wikipedia('en')
    wiki_html = wikipediaapi.Wikipedia(language='en', 
            extract_format=wikipediaapi.ExtractFormat.HTML)
    
    """
    init_categories = [
        #"Category:Mathematical_theorems",
        "Category:Mathematical_proofs",
        #"Category:Mathematical_examples",
        #"Category:Mathematical_problems",
        #"Category:Mathematical_terminology",
    ]

    title_set = set()
    for cat_name in init_categories: 
        print(cat_name + "...")
        title_set = title_set.union(page_titles_of_category(wiki.page(cat_name)))
    
    for title in title_set: 
    """

    p_html = wiki_html.page('Division by zero').text

    pd_obj = pypandoc.convert_text(p_html, "latex", format="html")
    print(pd_obj)
    sys.exit()
if __name__=="__main__": 
    wikipedia()