本文介绍了如何在Google Colab中将路径添加到PYTHONPATH的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
如何在google colab中执行以下命令. export PYTHONPATH =/project/pylib/src:$ PYTHONPATH
how to execute the following command in google colab.export PYTHONPATH=/project/pylib/src:$PYTHONPATH
！export PYTHONPATH =/project/pylib/src:$ PYTHONPATH 不受影响.
推荐答案
编辑2020-11-12
使用％"代替！"会保留会话中所有单元格的任何更改.因此，我们可以使用它来设置环境变量"PYTHONPATH".但是，导出不适用于colab.％env可以用来设置环境变量.Edit 2020-11-12
Using `%` instead of `!` retains any changes to all cells in the session. So, we can use that to set the environment variable `PYTHONPATH`. However, export doesn't work in colab. `%env` can be used to set the environment variable.! echo $PYTHONPATH
%env PYTHONPATH="$/env/python:/content/gdrive/My Drive/Colab Notebooks/MNIST_Classifier/src"
! echo $PYTHONPATH
输出:
/env/python
/env/python:/content/gdrive/My Drive/Colab Notebooks/MNIST_Classifier/src
初始答案
以下为我工作! echo $PYTHONPATH
import os
os.environ['PYTHONPATH'] += ":/content/gdrive/My Drive/Colab Notebooks/MNIST_Classifier/src"
! echo $PYTHONPATH
输出:
/env/python
/env/python:/content/gdrive/My Drive/Colab Notebooks/MNIST_Classifier/src
资料来源:
https://medium.com/@omernaeem/您可以使用os-environ-78a5181b6376设置环境变量
https://stackoverflow.com/a/49684719/3337089
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