Fabric ImportError: cannot import name 'isMappingType' with Python 2.7

Question

我正在尝试在本地启动 Fab 和 运行。为什么 Fab 安装到 /Library/Frameworks/Python.framework/Versions/3.5/bin/python3.5？系统Python版本为2.7.10，确认如下：

Toms-MBP:~ tom$ which python
/usr/local/bin/python
Toms-MBP:~ tom$ python --version
Python 2.7.10
Toms-MBP:~ tom$ head -1 `which fab`
#!/Library/Frameworks/Python.framework/Versions/3.5/bin/python3.5
Toms-MBP:~ tom$ fab
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.5/bin/fab", line 9, in <module>
    load_entry_point('Fabric==1.11.1', 'console_scripts', 'fab')()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pkg_resources/__init__.py", line 558, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pkg_resources/__init__.py", line 2682, in load_entry_point
    return ep.load()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pkg_resources/__init__.py", line 2355, in load
    return self.resolve()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pkg_resources/__init__.py", line 2361, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/fabric/main.py", line 13, in <module>
    from operator import isMappingType
ImportError: cannot import name 'isMappingType'

Answer 1

看起来你没有使用之前配置的 virtualenv，所以我认为系统只是使用到 python 的正常路径，这意味着到 /Library/Frameworks/Python.framework/Versions/3.5/bin/python3.5 .

当我们尝试将 Fabric 与 python3.x 一起使用时，这个错误很常见，因为 Fabric 还没有更新到 python 的这个版本，这真是令人难过。

Answer 2

你需要这个：

pip install fabric3