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Я начал писать telegram-бота и использовал для этого пример freeCodeCamp.

 from telegram.ext import Updater, CommandHandler
import requests
import re
contents = requests.get('https://random.dog/woof.json').json()
image_url = contents['url']

def get_url():
    contents = requests.get('https://random.dog/woof.json').json()
    url = contents['url']
    return url

def get_image_url():
    allowed_extension = ['jpg','jpeg','png']
    file_extension = ''
    while file_extension not in allowed_extension:
        url = get_url()
        file_extension = re.search("([^.]*)$",url).group(1).lower()
    return url
def bop(bot, update):
    url = get_url()
    chat_id = update.message.chat_id
    bot.send_photo(chat_id=chat_id, photo=url)


def main():
    updater = Updater('<MY-PRIVATE-BOT-TOKEN>')
    dp = updater.dispatcher
    dp.add_handler(CommandHandler('bop', bop))
    updater.start_polling()
    updater.idle()


if __name__ == '__main__':
    main()
  

После запуска этого кода я получил эту ошибку. Кроме того, я получаю эту ошибку после запуска любого бота telegram, который я пишу.

 Traceback (most recent call last):
  File "D:workbotvenvlibsite-packagesurllib3connection.py", line 159, in _new_conn
    conn = connection.create_connection(
  File "D:workbotvenvlibsite-packagesurllib3utilconnection.py", line 61, in create_connection
    for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
  File "C:UsersaAppDataLocalProgramsPythonPython38libsocket.py", line 918, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 11002] getaddrinfo failed

    raise MaxRetryError(_pool, url, error or ResponseError(cause))
    urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='random.dog', port=443): Max retries exceeded with url: /woof.json (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000026811517F10>: Failed to establish a new connection: [Errno 11002] getaddrinfo failed'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:/workbot/main.py", line 5, in <module>
    contents = requests.get('https://random.dog/woof.json').json()
  File "D:workbotvenvlibsite-packagesrequestsapi.py", line 75, in get
    return request('get', url, params=params, **kwargs)
  File "D:workbotvenvlibsite-packagesrequestsapi.py", line 60, in request
    return session.request(method=method, url=url, **kwargs)
  File "D:workbotvenvlibsite-packagesrequestssessions.py", line 533, in request
    resp = self.send(prep, **send_kwargs)
  File "D:workbotvenvlibsite-packagesrequestssessions.py", line 646, in send
    r = adapter.send(request, **kwargs)
  File "D:workbotvenvlibsite-packagesrequestsadapters.py", line 516, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='random.dog', port=443): Max retries exceeded with url: /woof.json (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000026811517F10>: Failed to establish a new connection: [Errno 11002] getaddrinfo failed'))
  

Мне также приходится использовать прокси или VPN для подключения к telegram из-за фильтрации.

Я получил еще одну ошибку подключения в эхо-боте. Я использовал код документации бота telegram. Я получил эту ошибку:

 raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='google', port=443): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x00000199A2C37DF0>: Failed to establish a new connection: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:/workbot/main.py", line 5, in <module>
    contents = requests.get('https://google').json()
  File "D:workbotvenvlibsite-packagesrequestsapi.py", line 75, in get
    return request('get', url, params=params, **kwargs)
  File "D:workbotvenvlibsite-packagesrequestsapi.py", line 60, in request
    return session.request(method=method, url=url, **kwargs)
  File "D:workbotvenvlibsite-packagesrequestssessions.py", line 533, in request
    resp = self.send(prep, **send_kwargs)
  File "D:workbotvenvlibsite-packagesrequestssessions.py", line 646, in send
    r = adapter.send(request, **kwargs)
  File "D:workbotvenvlibsite-packagesrequestsadapters.py", line 516, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='google', port=443): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x00000199A2C37DF0>: Failed to establish a new connection: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond'))