Using win32com encountered the following bug

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\win32com\client\gencache.py", line 534, in EnsureDispatch
    mod = EnsureModule(tla[0], tla[1], tla[3], tla[4], bForDemand=bForDemand)
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\win32com\client\gencache.py", line 391, in EnsureModule
    module = GetModuleForTypelib(typelibCLSID, lcid, major, minor)
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\win32com\client\gencache.py", line 266, in GetModuleForTypelib
    AddModuleToCache(typelibCLSID, lcid, major, minor)
  File "C:\Program Files (x86)\Python37-32\lib\site-packages\win32com\client\gencache.py", line 552, in AddModuleToCache
    dict = mod.CLSIDToClassMap
AttributeError: module 'win32com.gen_py.00020813-0000-0000-C000-000000000046x0x1x9' has no attribute 'CLSIDToClassMap'

The solution is:
delete the following folder, and the program can run normally

C:\Users\<my username>\AppData\Local\Temp\gen_py