導出 python 路徑變量時出現 Keyerror

Question

我試圖在 tensorflow 中運行經過預訓練的 model。 當我嘗試在 Jupytar 中運行以下命令時，出現錯誤：

import os
os.environ['PYTHONPATH'] = "{}/content/obj_detect_api/models:/content/obj_detect_api/models/research:/content/obj_detect_api/models/research/slim".format(os.environ['PYTHONPATH'])

我得到的錯誤是：

    KeyError                                  Traceback (most recent call last)
<ipython-input-5-f5b49a56ddb2> in <module>
      1 import os
----> 2 os.environ['PYTHONPATH'] = "{}/content/obj_detect_api/models:/content/obj_detect_api/models/research:/content/obj_detect_api/models/research/slim".format(os.environ['PYTHONPATH'])

~/opt/anaconda3/lib/python3.7/os.py in __getitem__(self, key)
    677         except KeyError:
    678             # raise KeyError with the original key value
--> 679             raise KeyError(key) from None
    680         return self.decodevalue(value)
    681 

KeyError: 'PYTHONPATH'

Answer 1

要從 jupyter 設置環境變量，您可以使用：

%env PYTHONPATH=MY_VALUE