发生异常：ModuleNotFoundError 没有名为“请求”的模块答案

【问题标题】：Exception has occurred: ModuleNotFoundError No module named 'requests'发生异常：ModuleNotFoundError 没有名为“请求”的模块
【发布时间】：2019-04-18 10:45:18
【问题描述】：

Exception has occurred: ModuleNotFoundError
No module named 'requests'.

但请求位于：C:\Users\piotr\Environments\bitcoin_notifications\Lib\site-packages\requests

我输入了 pip install requests 以将它们安装到我的 venv 中。

(bitcoin_notifications) PS C:\Users\piotr> pip install requests
Collecting requests
  Downloading https://files.pythonhosted.org/packages/7d/e3/20f3d364d6c8e5d2353c72a6777857kB)
    100% |████████████████████████████████| 61kB 868kB/s
Collecting certifi>=2017.4.17 (from requests)
  Downloading https://files.pythonhosted.org/packages/60/75/f692a584e85b7eaba0e03827b3d5s/60/75/f692a584e85b7eaba0e03827b3d51f45f571c2e793dd2.py3-none-any.whl (158kB)731e598828d380aa/certifi-2019.3.9-py2.py3-none-any.w2MB/shl (158kB)
    100% |████████████████████████████████| 163kB 2.s/bc/a9/01ffebfb562e4274b6487b4bb1dd2MB/s                                               y3-none-any.whl (133kB)
Collecting chardet<3.1.0,>=3.0.2 (from requests)    5MB/s
  Downloading https://files.pythonhosted.org/packages/bc/a9/01ffebfb562e4274b6487b4bb1ddec7ca55ec7510b22s/14/2c/cd551d81dbe15200be1cf41cd038e4c51f14098443b8/chardet-3.0.4-py2.py3-none-any.whl ne-any.whl (58kB)
(133kB)                                             MB/s
    100% |████████████████████████████████| 143kB 1.5MB/s                                               s/df/1c/59cca3abf96f991f2ec3131a4ffeCollecting idna<2.9,>=2.5 (from requests)
  Downloading https://files.pythonhosted.org/packages/14/2c/cd551d81dbe15200be1cf41cd03869a46fe7226e7450af7a6545bfc474c9/idna-2.8-py2.py3-none-any.whl (58kB)69a46fe7226e7450af7a6545bfc474c9/idna-2.8-py2.py3-none-any.whl (58kB)    100% |████████████████████████████████| 61kB 2.4MB/s

我导入请求：import requests

还有：

Exception has occurred: ModuleNotFoundError
No module named 'requests'
  File "C:\Users\piotr\Documents\bitcoin_notifications.py", line 1, in <module>
    import requests
  File "C:\Users\piotr\AppData\Local\Programs\Python\Python37\Lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\piotr\AppData\Local\Programs\Python\Python37\Lib\runpy.py", line 96, in _run_module_code
    mod_name, mod_spec, pkg_name, script_name)
  File "C:\Users\piotr\AppData\Local\Programs\Python\Python37\Lib\runpy.py", line 263, in run_path
    pkg_name=pkg_name, script_name=fname)

【问题讨论】：

您的请求似乎在virtualenv 中，但错误似乎表明您正在系统python 中尝试import requests。在尝试import requests之前您是否激活了virtualenv
你能告诉我们产生这些错误的命令吗？有很多可能性...
PS C:\Users\piotr> Environments\bitcoin_notifications\Scripts\activate (bitcoin_notifications) PS C:\Users\piotr>
当我再次调试时，Python 控制台作为第二个终端打开并且：ppcd : The term 'ppcd' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.

标签： python python-3.x python-requests virtualenv python-venv

【解决方案1】：

如前所述，您没有在 pip install 命令之前激活您的 venv。

运行： venv\脚本\激活

来自您的虚拟环境所在的目录。

然后运行 pip install requests

【讨论】：

PS C:\Users\piotr> Environments\bitcoin_notifications\Scripts\activate
我运行它并激活了venv：(bitcoin_notifications) PS C:\Users\piotr>
我输入了pip install requests，Powershell 告诉我Requirement already satisfied: requests in c:\users\piotr\environments\bitcoin_notifications\lib\site-packages
这个错误依然出现...Exception has occurred: ModuleNotFoundError No module named 'requests'.
你能发布你的命令和输出吗？每个细节都很重要。这比告诉我们你做了什么更有效

【解决方案2】：

正如其他人所说，您似乎没有正确激活虚拟环境。

但是：由于您使用的是 PowerShell，因此您需要“点源”文件，而不是运行脚本。

请参阅您之前的帖子以获取解决方案： POWERSHELL VENV The module 'bitcoin_notifications' could not be loaded

【讨论】：