Python导入在shell中运行但不在文件中

Question

我正在使用 Influxdb python 客户端向 Influxdb 写入数据。

但是，我无法在我的文件中导入 influxdb 模块。 它成功导入到 shell 中，但在文件中不起作用。

这里是

print '\n'.join( sys.path )

从我的外壳

/usr/lib/python2.7
/usr/lib/python2.7/plat-x86_64-linux-gnu
/usr/lib/python2.7/lib-tk
/usr/lib/python2.7/lib-old
/usr/lib/python2.7/lib-dynload
/usr/local/lib/python2.7/dist-packages
/usr/lib/python2.7/dist-packages
/usr/lib/pymodules/python2.7

我的文件也是这样，

/home/azureuser/pranav/book/vogo-backend-v2/book
/home/azureuser/.virtualenvs/book/lib/python2.7
/home/azureuser/.virtualenvs/book/lib/python2.7/plat-x86_64-linux-gnu
/home/azureuser/.virtualenvs/book/lib/python2.7/lib-tk
/home/azureuser/.virtualenvs/book/lib/python2.7/lib-old
/home/azureuser/.virtualenvs/book/lib/python2.7/lib-dynload
/usr/lib/python2.7
/usr/lib/python2.7/plat-x86_64-linux-gnu
/usr/lib/python2.7/lib-tk
/home/azureuser/.virtualenvs/book/local/lib/python2.7/site-packages
/home/azureuser/.virtualenvs/book/lib/python2.7/site-packages
/home/azureuser/pranav/book/vogo-backend-v2/book

这里是

sys.executable #from file
/home/azureuser/.virtualenvs/book/bin/python

sys.executable #from the shell
/usr/bin/python

如果我在不使用 sudo pip 的情况下安装它，则会引发异常，

  Exception:
  Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main
  status = self.run(options, args)
  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 283, in run
  requirement_set.install(install_options, global_options, root=options.root_path)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1436, in install
  requirement.install(install_options, global_options, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 672, in install
self.move_wheel_files(self.source_dir, root=root)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 902, in move_wheel_files
  pycompile=self.pycompile,
  File "/usr/lib/python2.7/dist-packages/pip/wheel.py", line 206, in move_wheel_files
  clobber(source, lib_dir, True)
  File "/usr/lib/python2.7/dist-packages/pip/wheel.py", line 193, in clobber
  os.makedirs(destsubdir)
  File "/usr/lib/python2.7/os.py", line 157, in makedirs
mkdir(name, mode)
  OSError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/distpackages/influxdb-4.0.0.dist-info'

 Storing debug log for failure in /tmp/tmpokCmFo

请解释为什么会出现问题？还有解决办法。

Answer 1

1. 首先正确创建虚拟环境：

   virtualenv my_env
   

2. 激活虚拟环境：

   source my_env/bin/activate
   

3. 在您的 virtualenv 中使用 --no-cache-dir 标志再次安装客户端：

   pip install influxdb --no-cache-dir
   

4. 尝试在您的 .py 文件中访问相同的内容。

这肯定会解决您的问题！