没有名为“dotenv”的模块 python 3.8

Question

编辑：解决了，如果有人遇到这python3.8 -m pip install python-dotenv对我有用。

我已经尝试重新安装 dotenv 和 python-dotenv，但我仍然遇到相同的错误。我确实在与此脚本相同的目录中有 .env 文件。

#bot.py
import os
import discord

from dotenv import load_dotenv
load_dotenv()


token=os.getenv('DISCORD_TOKEN')

client = discord.Client()


@client.event
async def on_ready():
    print(f'{client.user} has connected to Discord!')


client.run(token)

Answer 1

如果是 Ubuntu 或 Debian，请在您的安装管理器中尝试： apt install python3-dotenv

您也可以尝试sudo pip3 install python-dotenv通过pip安装。

无论您做什么，都记得明确包含缺少的3部分。

于Debian / Ubuntu具有单独的包并作为当前时间的python装置python2和python3方法python3在其易于储存库。但是，当涉及到python系统上本地安装的二进制文件时，它默认使用的 python 二进制文件可能会有所不同，具体取决于 /usr/bin/python 在系统上的符号链接。有些系统符号链接到类似的东西，python2.7而其他系统则可能是类似的东西python3.5。本地安装的pip. 因此，为什么在安装或搜索 python 包时使用“3”很重要

Answer 2

我是 Python 新手，刚遇到完全相同的错误。刚刚将安装命令更改为我从 MongoDB 教程中使用的命令来安装 PyMongo。它就像一个魅力:)

python -m pip install python-dotenv

Answer 3

这将解决仅通过终端安装的问题：

pip3 install python-dotenv对于 python 3.0 版本或pip install python-dotenv对于不同于 3.0 的 python

Answer 4

如果您正在使用poetry（https://python-poetry.org），那么...

确保你正在做：

$ poetry run SOME_COMMAND
# such as `poetry run pytest`

而不仅仅是：

$ SOME_COMMAND
# such as `pytest`

我的问题（详细）是......

# Starting with a _contrasting_ example that _unexpectedly worked_..

# A long time ago I did..

$ pip install pytest

# And now, I was doing everything below..

$ poetry add requests

# ..Then I wrote code that has `import requests` in it
# ..Then I wrote some unit test code (to use with pytest) to test the use of `requests`

# ..And NOT knowing I'm supposed to do `poetry run pytest`, I was just doing

$ pytest

# ..And it (oddly) worked, perhaps because maybe `requests` had been installed globally somewhere for me.

# ..But then I did

$ poetry add python-dotenv 

# ..Then I wrote code that had `from dotenv import load_dotenv` in it
# ..Then I wrote some unit test code (to use with pytest) to test the use of `python-dotenv`

# And I got the error I should have gotten..

$ pytest

# ..a bunch of error output, including..
ModuleNotFoundError: No module named 'dotenv'

因此，修复方法是：

# Get rid of the global pytest. Don't want to use that.
# (I think this step is optional, b/c I think `poetry run pytest` below will use the pytest installed via poetry in your virtual env (i.e. I _think_ it will (on it's own) NOT use the globally installed pytest.))
$ pip uninstall pytest

$ poetry add python-dotenv
$ poetry add --dev pytest

$ poetry run pytest

修复归功于：

https://github.com/joeyespo/pytest-watch/issues/112