如何冻结仅在虚拟环境中安装的包？

Question

How to freeze packages installed only in the virtual environment, that is, without the global ones?

Answer 1

You need to use the -l or --local option to freeze only the local packages (and not the global ones)

pip freeze -l > requirements.txt 

Make sure you are working in the virtualenv before doing pip freeze -l .

Answer 2

Only local packages on virtual environment

pip freeze -l > requirements.txt # or --local instead of -l

Only local packages installed by the user on virtual environment

pip freeze --user > requirements.txt

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See the documentation for further details: https://pip.pypa.io/en/stable/reference/pip_freeze/ .

Answer 3

对我来说（macOS）以下工作

path/to/venv/bin/pip3 freeze -l

Answer 4

I'm on Windows 10, python 3.6, with my virtual environment called env activated using command prompt I found that pip freeze -l does not work (error), python -m pip freeze -l does not work (gets global packages) but changing into my virtual environment Scripts directory and running pip freeze or pip freeze -l works. Here is an example of this solution/work-around with my virtual environment, env :

cd \env\Scripts
pip freeze > ..\..\requirements.txt

Answer 5

python venv/Path_to/bin/pip freeze -l 

Answer 6

I did try everything, even i inside venv it not worked. This code worked for me. It shows only pip packages in venv.

venv\Scripts\python.exe venv\Scripts\pip.exe freeze > requirements.txt 

Answer 7

Install whatever you need to freeze in your virtual environment, and then

pip freeze > requirements.txt

After that install the packages in the virtual environment that you do not want to freeze.

Answer 8

尝试以下命令：

pip -E /path/to/env/ freeze