Pandas chain assignment to switch to loc or an error. The. Going to throw up-CodePudding

From the very beginning of

 
Df6 [' order month]=df6 [' order time]. Dt. The month

To change to this or an error,,,,

 df6. Loc [: 'order (date) (month) (year)]=df6. Loc [:' order time]. Dt. Date. The copy () 

D: \ soft \ PPPPython \ lib \ site - packages, pandas, core, indexing. The py: 1676: SettingWithCopyWarning: 
A value is trying to be set on A copy of A slice from A DataFrame. 
Try using. Loc [row_indexer col_indexer]=value home 

See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy 
Self. _setitem_single_column (ilocs [0], value, PI)