Question

我已经在Heroku上使用Python 3.6.9版部署了一个电报机器人（使用Django）它运行良好，没有任何问题。几个月后，我做了一些更改，但在尝试再次部署它时遇到了问题。 Heroku不再支持python 3.6.9。支持3.6.10 所以我用python 3.6.10设置了venv，运行服务器后仍然遇到相同的问题。简短问题：

    from .callbackcontext import CallbackContext File 
"/home/usr/bot-name/venv/lib/python3.6/site-packages/telegram/ext/callbackcontext.py"
, line 21, in <module> from telegram import Update 
ImportError: cannot import name 'Update' from 'telegram'

（/ home / usr / bot-name / venv / lib / python3.6 / site-packages / telegram / init .py）

我还尝试了python 3.7.6（Heroku也支持它），但是在运行服务器后出现相同的问题：

_python manage.py runserver
Watching for file changes with StatReloader
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/threading.py", line 926, in _bootstrap_inner
self.run()
File "/usr/local/lib/python3.7/threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/django/utils/autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run
autoreload.raise_last_exception()
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/django/utils/autoreload.py", line 77, in raise_last_exception
raise _exception[1]
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/django/core/management/init.py", line 337, in execute
autoreload.check_errors(django.setup)()
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/django/utils/autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/django/init.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/django/apps/registry.py", line 91, in populate
app_config = AppConfig.create(entry)
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/django/apps/config.py", line 116, in create
mod = import_module(mod_path)
File "/home/usr/bot-name/venv/lib/python3.7/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1006, in _gcd_import
File "", line 983, in _find_and_load
File "", line 967, in _find_and_load_unlocked
File "", line 677, in _load_unlocked
File "", line 728, in exec_module
File "", line 219, in call_with_frames_removed
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/django_telegrambot/apps.py", line 9, in
from telegram.ext import Dispatcher
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/telegram/ext/init.py", line 25, in
from .callbackcontext import CallbackContext
File "/home/usr/bot-name/venv/lib/python3.7/site-packages/telegram/ext/callbackcontext.py", line 21, in
from telegram import Update
ImportError: cannot import name 'Update' from 'telegram' (/home/usr/bot-name/venv/lib/python3.7/site-packages/telegram/init.py)

在这里您可以找到我的要求：

cffi==1.13.2
cryptography==2.8
dj-database-url==0.5.0
Django==2.2.7
django-heroku==0.3.1
django-telegrambot==1.0.1
et-xmlfile==1.0.1
future==0.18.2
gunicorn==20.0.4
jdcal==1.4.1
mysqlclient==1.4.5
openpyxl==3.0.2
pipenv==2018.11.26
psycopg2==2.8.4
pycparser==2.19
python-telegram-bot==12.2.0
pytz==2019.3
six==1.13.0
sqlparse==0.3.0
telegram==0.0.1
tornado==6.0.3
virtualenv==16.7.9
virtualenv-clone==0.5.3
whitenoise==5.0.1

Answer 1

正如@GaganTK所说，这很可能是由于python-telegram-bot库中的最新更新所致。

我建议您检查您的代码是否符合v12 transition guide中的所有内容。

Answer 2

问题出在已安装的软件包中在使用最新的python版本创建venv之后，我从requirements.txt中删除了所有其他软件包（仅保留了Django，python-telegram-bot...。），并且删除了冻结版本

出现 psycopg错误

后

解决方案是安装一些软件包：

sudo apt install libpq-dev

在我安装需求没有任何问题并且Django运行良好之后

希望我可以帮助某人解决此问题

Answer 3

发生此问题是因为您要在python-telegram-bot==12.2.0之前安装telegram==0.0.1

要解决此问题，您必须更改requirementst.txt文件中电报的位置。首先安装电报，然后安装python-telegram-bot。因此，您的requirements.txt必须是这样的：

cffi==1.13.2
cryptography==2.8
dj-database-url==0.5.0
Django==2.2.7
django-heroku==0.3.1
django-telegrambot==1.0.1
et-xmlfile==1.0.1
future==0.18.2
gunicorn==20.0.4
jdcal==1.4.1
mysqlclient==1.4.5
openpyxl==3.0.2
pipenv==2018.11.26
psycopg2==2.8.4
pycparser==2.19
telegram==0.0.1
python-telegram-bot==12.2.0
pytz==2019.3
six==1.13.0
sqlparse==0.3.0
tornado==6.0.3
virtualenv==16.7.9
virtualenv-clone==0.5.3
whitenoise==5.0.1

这将解决您的问题！

Answer 4

对我来说，解决方案是卸载 python-telegram-bot 和电报包，只安装 python-telegram-bot 包

pip uninstall python-telegram-bot telegram
pip install python-telegram-bot --upgrade

Python-电报机器人问题

4 个答案: