为什么此代码不显示字符数？

Question

这是我的代码。它将URL拆分为各个组成部分，然后读取URL并将其打印到屏幕上。之后，它应该显示字符数，但是没有显示，我不确定如何解决。

import urllib.request
import urllib.error
import urllib.parse
from urllib.parse import urlparse



def welcome():
    # asks user for name
    name = input('Please enter your name:\nPress "2" to exit.')
    # if 2 is typed, program ends
    if name == '2':
        # prints message
        print('Goodbye!')
        # exits
        exit
    else:
        # prints user name and explains program
        print('Welcome to the program',name,'!', "This program will ask for a url then get the domain name and convert the url to a text file and count the words in it.")
        # takes user to main
        main()


def main():
    try:
        # asks user what file they want to open
        url = input('Please enter a url.\nPress "2" to quit.\n')
        if url == ('2'):
        # prints message and exits
            print('Goodbye')
            # exits
            exit
        else:
            # prints url
            print(url)
            # parses the url for the scheme
            scheme = urlparse(url).scheme
            # prints the scheme
            print("The scheme of the URL is: ", scheme)
            # parses the url for the domain
            domain = urllib.parse.urlsplit(url)[1].split(':')[0]
            # prints the domain
            print ("The domain name of the url is: ", domain)
            # parses the url for the path
            path = urlparse(url).path[1:]
            # prints the path
            print("The path of the url is: ", path)
            # pauses for the user
            input("Press 'Enter' to retrieve and print the webpage.")
            # prints out webpage
            print("Here is the webpage:")
            # requests to open the webpage
            fhand = urllib.request.urlopen(url)
            for line in fhand:
                print(line.decode().strip())
            input("Press 'Enter' to count the overall number of characters in the document.")
            characters = 0
            for line in fhand:
                words = line.decode()
                characters = characters + len(words)
            print(characters)
            # pauses for user
            input('Press "Enter" to do it again or exit.')
            # takes user to repeat function
            repeat()

    except:
        # if there is an error, code goes here
        print('Error. Cannot open webpage. Try again.')
        # takes user back to main
        main()

def repeat():
    # asks user if they would like to repeat or do another search
    choice = input("Would you like to use another url? \nPress '1' to repeat.\nPress '2' to exit.\n")
    # if 1 is typed program goes through the letter function then back to repeat
    if choice == '1':
        # takes user back to main
        main()
    # if 2 is typed program exits
    elif choice == '2':
        # prints message
        print('Goodbye!')
        # exists program
        exit
    else:
        # prints message
        print('Something went wrong. Try again.')
        # takes user back to main
        main()

welcome()

一切正常，直到出现在柜台上，并显示为：

{}

我在网上寻求其他帮助，该部分的代码完全相同，但在我的产品中不起作用。