macOS系统通过conda安排spyder

1.在base环境下安装：

$ conda install spyder=3.3.4

安装结束后不能启动spyder:

$ spyder

$ /miniconda3/bin/pythonw: line 3: /miniconda3/python.app/Contents/MacOS/python: No such file or directory

```

2.担心base环境中各种包的冲突，重新创新环境：

```

$ conda create -n spyder python=3

```

创建成功后，激活spyder环境：

```

$ conda activate spyder

```

3. 再次安装spyder:

```

$ conda install spyder=3.3.4
```

4.运行时报错

```

$ spyder

Traceback (most recent call last):
  File "/miniconda3/envs/spyder/bin/spyder", line 11, in <module>
    sys.exit(main())
  File "/miniconda3/envs/spyder/lib/python2.7/site-packages/spyder/app/start.py", line 186, in main
    from spyder.app import mainwindow
  File "/miniconda3/envs/spyder/lib/python2.7/site-packages/spyder/app/mainwindow.py", line 48, in <module>
    requirements.check_qt()
  File "/miniconda3/envs/spyder/lib/python2.7/site-packages/spyder/requirements.py", line 41, in check_qt
    import qtpy
  File "/miniconda3/envs/spyder/lib/python2.7/site-packages/qtpy/__init__.py", line 208, in <module>
    raise PythonQtError('No Qt bindings could be found')
qtpy.PythonQtError: No Qt bindings could be found

```

5.将pyqt包降级

```

$ conda install pyqt==5.6

```

6.再次运行成功