Modification of Instaget package to download pictures from a hashtag

hashtaget.py

import sys
import json
import requests
from urllib import request
from bs4 import BeautifulSoup

def main():
    try:
        url   = sys.argv[1]

        page  = BeautifulSoup(requests.get(url).text, 'html.parser')
        image = page.find_all('script')

        image = image[3].text.replace("window._sharedData = ", "")
        image = image.replace(";", "")

        pictures  = json.loads(image)['entry_data']['TagPage'][0]['graphql']['hashtag']['edge_hashtag_to_media']['edges']

        for pic in pictures:
            image_uri  = pic['node']['display_url']
            image_file = image_uri.split("/")[-1]
            request.urlretrieve(image_uri, image_file)

    except IndexError:
        print("No URL!")
    except ValueError as VE:
        print("Invalid URL")
    except requests.exceptions.MissingSchema as MissingSchema:
        print("Invalid URL")

if __name__ == "__main__":
    main()