谷歌应用引擎中的“导入错误：没有名为装饰器的模块”

Question

I have added a validators library to my google app engine by manually adding the code to a folder lib/validators . Then in my code I added this line

from validators.utils import ValidationFailure

When I run my app I got an exception from this line:

    from validators.utils import ValidationFailure
  File "lib/validators/__init__.py", line 1, in <module>
    from .between import between
  File "lib/validators/between.py", line 2, in <module>
    from .utils import validator
  File "lib/validators/utils.py", line 5, in <module>
    from decorator import decorator
ImportError: No module named decorator

If I run from decorator import decorator in the python intrepretor, it works as expected.

However when I tried it in the 'interactive console' in the local development server, I got the same error

How can I resolve this exception?

Answer 1

这对我有用，我专门为Python 3.4安装了装饰器包：

sudo python3.4 -m pip install decorator  # specifically Python 3.4

Answer 2

我需要将decorator.py及其依赖项six.py到同一个'lib'文件夹中。

Answer 3

对于python3或更高版本，请使用

sudo apt-get install python3-decorator

Answer 4

If you're using anaconda , the best approach is to install it through conda install decorator .

I hope you find it useful.

Answer 5

I create the symbolic links like previous answer said, but doesn't work for me. I have to download the source package

https://pypi.python.org/pypi/decorator#downloads

and I have reinstalled it manually "$ python setup.py install"

And It worked