No module named 'cached_property'

[YerongLi]

请问这个cached_property是怎么来的呢？简单setup之后tests里面的文件需要这个依赖。谢谢！

 $ python A_share_data_update_routine.py 
  Traceback (most recent call last):
    File "A_share_data_update_routine.py", line 4, in <module>
      from AShareData import ConstLimitStockFactorCompositor, MySQLInterface, prepare_engine, TushareData, WindData
    File "<frozen zipimport>", line 259, in load_module
    File "/home/yerong/local/Python3/lib/python3.8/site-packages/AShareData-0.1.0-py3.8.egg/AShareData/__init__.py", line 4, in <module>
    File "<frozen zipimport>", line 259, in load_module
    File "/home/yerong/local/Python3/lib/python3.8/site-packages/AShareData-0.1.0-py3.8.egg/AShareData/AShareDataReader.py", line 3, in <module>
  ModuleNotFoundError: No module named 'cached_property'

  $ python factor_test.py 
  Traceback (most recent call last):
    File "factor_test.py", line 3, in <module>
      from AShareData.DBInterface import MySQLInterface, prepare_engine
    File "<frozen zipimport>", line 259, in load_module
    File "/home/yerong/local/Python3/lib/python3.8/site-packages/AShareData-0.1.0-py3.8.egg/AShareData/__init__.py", line 4, in <module>
    File "<frozen zipimport>", line 259, in load_module
    File "/home/yerong/local/Python3/lib/python3.8/site-packages/AShareData-0.1.0-py3.8.egg/AShareData/AShareDataReader.py", line 3, in <module>
  ModuleNotFoundError: No module named 'cached_property'