问题表现

项目正常run没有问题，但是debug启动的时候报：module 'thread' has no attribute 'start_new_thread'，具体错误如下图：

Traceback (most recent call last):
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/pydevd.py", line 2199, in <module>
    main()
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/pydevd.py", line 2181, in main
    globals = debugger.run(setup['file'], None, None, is_module)
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/pydevd.py", line 1451, in run
    self.prepare_to_run()
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/pydevd.py", line 1339, in prepare_to_run
    self.patch_threads()
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/pydevd.py", line 1355, in patch_threads
    patch_thread_modules()
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/_pydev_bundle/pydev_monkey.py", line 886, in patch_thread_modules
    patch_thread_module(t)
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/_pydev_bundle/pydev_monkey.py", line 849, in patch_thread_module
    _original_start_new_thread = thread_module._original_start_new_thread = thread_module.start_new_thread
AttributeError: module 'thread' has no attribute 'start_new_thread'

原因有两种情况：

1. 模块中没有这个属性
2. 项目里包含一个叫thread.py的文件或者thread的包名，重命名一下即可。（我的是这个问题）