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Document the InteractiveTelegramClient more nicely

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Lonami Exo 2017-10-21 16:21:58 +02:00
parent 7596f2b797
commit f6223bd01a
1 changed files with 71 additions and 15 deletions
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86
telethon_examples/interactive_telegram_client.py
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@ -20,11 +20,11 @@ def sprint(string, *args, **kwargs):
def print_title(title):
# Clear previous window
print('\n')
print('=={}=='.format('=' * len(title)))
"""Helper function to print titles to the console more nicely"""
sprint('\n')
sprint('=={}=='.format('=' * len(title)))
sprint('= {} ='.format(title))
print('=={}=='.format('=' * len(title)))
sprint('=={}=='.format('=' * len(title)))
def bytes_to_string(byte_count):
@ -34,8 +34,9 @@ def bytes_to_string(byte_count):
byte_count /= 1024
suffix_index += 1
return '{:.2f}{}'.format(byte_count,
[' bytes', 'KB', 'MB', 'GB', 'TB'][suffix_index])
return '{:.2f}{}'.format(
byte_count, [' bytes', 'KB', 'MB', 'GB', 'TB'][suffix_index]
)
class InteractiveTelegramClient(TelegramClient):
@ -48,13 +49,38 @@ class InteractiveTelegramClient(TelegramClient):
"""
def __init__(self, session_user_id, user_phone, api_id, api_hash,
proxy=None):
"""
Initializes the InteractiveTelegramClient.
:param session_user_id: Name of the *.session file.
:param user_phone: The phone of the user that will login.
:param api_id: Telegram's api_id acquired through my.telegram.org.
:param api_hash: Telegram's api_hash.
:param proxy: Optional proxy tuple/dictionary.
"""
print_title('Initialization')
print('Initializing interactive example...')
# The first step is to initialize the TelegramClient, as we are
# subclassing it, we need to call super().__init__(). On a more
# normal case you would want 'client = TelegramClient(...)'
super().__init__(
# These parameters should be passed always, session name and API
session_user_id, api_id, api_hash,
# You can optionally change the connection mode by using this enum.
# This changes how much data will be sent over the network with
# every request, and how it will be formatted. Default is
# ConnectionMode.TCP_FULL, and smallest is TCP_TCP_ABRIDGED.
connection_mode=ConnectionMode.TCP_ABRIDGED,
# If you're using a proxy, set it here.
proxy=proxy,
# If you want to receive updates, you need to start one or more
# "update workers" which are background threads that will allow
# you to run things when your update handlers (callbacks) are
# called with an Update object.
update_workers=1
)
@ -62,6 +88,8 @@ class InteractiveTelegramClient(TelegramClient):
# so it can be downloaded if the user wants
self.found_media = set()
# Calling .connect() may return False, so you need to assert it's
# True before continuing. Otherwise you may want to retry as done here.
print('Connecting to Telegram servers...')
if not self.connect():
print('Initial connection failed. Retrying...')
@ -69,18 +97,24 @@ class InteractiveTelegramClient(TelegramClient):
print('Could not connect to Telegram servers.')
return
# Then, ensure we're authorized and have access
# If the user hasn't called .sign_in() or .sign_up() yet, they won't
# be authorized. The first thing you must do is authorize. Calling
# .sign_in() should only be done once as the information is saved on
# the *.session file so you don't need to enter the code every time.
if not self.is_user_authorized():
print('First run. Sending code request...')
self.send_code_request(user_phone)
self.sign_in(user_phone)
self_user = None
while self_user is None:
code = input('Enter the code you just received: ')
try:
self_user = self.sign_in(user_phone, code)
self_user = self.sign_in(code=code)
# Two-step verification may be enabled
# Two-step verification may be enabled, and .sign_in will
# raise this error. If that's the case ask for the password.
# Note that getpass() may not work on PyCharm due to a bug,
# if that's the case simply change it for input().
except SessionPasswordNeededError:
pw = getpass('Two step verification is enabled. '
'Please enter your password: ')
@ -88,16 +122,22 @@ class InteractiveTelegramClient(TelegramClient):
self_user = self.sign_in(password=pw)
def run(self):
# Listen for updates
"""Main loop of the TelegramClient, will wait for user action"""
# Once everything is ready, we can add an update handler. Every
# update object will be passed to the self.update_handler method,
# where we can process it as we need.
self.add_update_handler(self.update_handler)
# Enter a while loop to chat as long as the user wants
while True:
# Retrieve the top dialogs
# Retrieve the top dialogs. You can set the limit to None to
# retrieve all of them if you wish, but beware that may take
# a long time if you have hundreds of them.
dialog_count = 15
# Entities represent the user, chat or channel
# corresponding to the dialog on the same index
# corresponding to the dialog on the same index.
dialogs, entities = self.get_dialogs(limit=dialog_count)
i = None
@ -119,6 +159,12 @@ class InteractiveTelegramClient(TelegramClient):
if i == '!q':
return
if i == '!l':
# Logging out will cause the user to need to reenter the
# code next time they want to use the library, and will
# also delete the *.session file off the filesystem.
#
# This is not the same as simply calling .disconnect(),
# which simply shuts down everything gracefully.
self.log_out()
return
@ -158,8 +204,8 @@ class InteractiveTelegramClient(TelegramClient):
# History
elif msg == '!h':
# First retrieve the messages and some information
total_count, messages, senders = self.get_message_history(
entity, limit=10)
total_count, messages, senders = \
self.get_message_history(entity, limit=10)
# Iterate over all (in reverse order so the latest appear
# the last in the console) and print them with format:
@ -237,6 +283,7 @@ class InteractiveTelegramClient(TelegramClient):
entity, msg, link_preview=False)
def send_photo(self, path, entity):
"""Sends the file located at path to the desired entity as a photo"""
self.send_file(
entity, path,
progress_callback=self.upload_progress_callback
@ -244,6 +291,7 @@ class InteractiveTelegramClient(TelegramClient):
print('Photo sent!')
def send_document(self, path, entity):
"""Sends the file located at path to the desired entity as a document"""
self.send_file(
entity, path,
force_document=True,
@ -252,6 +300,9 @@ class InteractiveTelegramClient(TelegramClient):
print('Document sent!')
def download_media_by_id(self, media_id):
"""Given a message ID, finds the media this message contained and
downloads it.
"""
try:
# The user may have entered a non-integer string!
msg_media_id = int(media_id)
@ -291,6 +342,11 @@ class InteractiveTelegramClient(TelegramClient):
)
def update_handler(self, update):
"""Callback method for received Updates"""
# We have full control over what we want to do with the updates.
# In our case we only want to react to chat messages, so we use
# isinstance() to behave accordingly on these cases.
if isinstance(update, UpdateShortMessage):
who = self.get_entity(update.user_id)
if update.out: