在Anaconda或者Linux系统中导入或导出requirements.txt中的代码环境

This blog is about the useful command of importing environment.
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1. If you want to export the environment or import the environment

• simple step

1. use pip freeze > requirements.txt or pip list --format=freeze > requirements.txt to generate requirement list
2. use pip install -r requirements.txt or conda install --yes --file requirements.txt to install the list

2. If you encounter some problems, try these commands

• higher level step
  • if requirements.txt has some invalid packages
    • while read requirement; do conda install --yes $requirement; done < requirements.txt
  • if can not use conda but can use pip
    • while read requirement; do conda install --yes $requirement || pip install $requirement; done < requirements.txt

3. Another way of importing or exporting environment

• export:
  • conda env export > freeze.yml
• import:
  • conda env create -f freeze.yml

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