没有名为“dotenv”的模块 python 3.8

Question

编辑：已解决，如果有人遇到此 python3.8 -m pip install python-dotenv 为我工作。

我已经尝试重新安装 dotenv 和 python-dotenv，但我仍然遇到同样的错误。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

就我而言，我在 zsh 控制台中将 python 别名为 python3。

使用python3 -i filename.py 运行.py 文件使其工作。

Answer 2

如果您使用的是poetry (https://python-poetry.org)，那么...

确保你正在做：

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

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

修复的功劳归于：

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

Answer 3

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

你也可以尝试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。

Debian/Ubuntu 有单独的软件包，目前 python 在它们的 apt 存储库中表示 python2 和 python3 表示 python3。但是，当涉及到您在系统上本地安装的 python 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，具体取决于系统上 /usr/bin/python 符号链接到的内容。有些系统符号链接到 python2.7 之类的东西，而其他系统可能是 python3.5 之类的东西。本地安装的pip 也存在类似问题。因此，为什么在安装或搜索 python 包时使用“3”很重要

Answer 4

这将解决仅通过终端安装的问题：

pip3 install python-dotenvfor python 3.0 版本或pip install python-dotenv for python 3.0 以外的版本

Answer 5

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

python -m pip install python-dotenv