Return variables from one function to use in another with python

Question

I don't know why this isn't working

from bs4 import *
import time
import pandas as pd
import pickle
import html5lib
from requests_html import HTMLSession

s = HTMLSession()
url = "https://cryptoli.st/lists/fixed-supply"


def get_data(url):
    r = s.get(url)
    soup = BeautifulSoup(r.text, 'html.parser')
    return soup
    
def get_next_page(soup):
    page = soup.find('ul', {'class': 'pager'})
    if not page.find('a', {'class': 'btn btn-default current disabled'}):
        url = 'https://cryptoli.st/lists/fixed-supply' + \
            str(page.find('li', {'class': 'paginate_button'}).find(
                'a')[{'class': 'btn btn-default next'}])
        return url
    else:
        return


get_data(url)
print(get_next_page(soup))

I have seen other scripts that return variables from one function to use in another but this keeps saying "soup" is not defined. Then if I make soup a global variable then I get the error that page is a Nonetype and I can't call the .find attribute off it. Any help would be appreciated.

Answer 1

Your last line for print(get_next_page(data)) is running the function get_next_page with the parameter data passed in. However, data is never defined, and so it passes in None. So then inside of get_next_page, it assigns soup = None. Then you are running everything else on None.

In the second-to-bottom line you need to do data = get_data(url), and then when you call get_next_page(data)), data will be equal to the soup that you returned from the first function.

Also, you probably need that s = HTMLSession() to either be inside of the get_url function, or pass it in like you do url