Into a virtual environment where the (need to export the environmental package) in
Go to the directory of the project (storage location for the exported package):
pip freeze > requirement.txt
In the new environment (need to install the python package in the environment):
pip install -r requirement.txt
Note: The export package is not to find the project here, but the all-party package python virtual environment projects used to pull in the target file, which means that this document may contain items less than the package.