Bloc-Alliances.py

import requests
from bs4 import BeautifulSoup

s = requests.session()

headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36'}
url = 'http://blocgame.com'
data = {'username': 'USERNAME', 'password': 'PASSWORD', 'login': ''}

s.headers['User-Agent'] = headers['User-Agent']
login = s.post(url+'/login.php', data=data, headers=headers)

#main = s.get(url+'/main.php')

def get_alliances(pages=1):
    if pages < 1:
        return

    alliances = []
    soups = []

    for i in range(1, pages+1):
        soups.append(BeautifulSoup(s.get(url + '/alliancerankings.php?page={}'.format(i)).text, 'html.parser'))

    for soup in soups:
        for link in soup.find_all('a', href=True):
            if link['href'].startswith('alliancestats') and link not in alliances:
                alliances.append(link['href'])

    return alliances

# Tests
# print(get_alliances(pages=2))
# print(get_alliances(pages=-1) is None)

def get_alliance(num=None, name=None):
    if not num and not name or num and name:
        return "Invalid args"

    raise NotImplemented("Soon tee em")