There are two DataFrame in the list, and I modify these two DataFrame through iteration, but there is no changing [on hold]

Multi tool use
Multi tool useThe name of the picture


There are two DataFrame in the list, and I modify these two DataFrame through iteration, but there is no changing [on hold]


combine = [data_train,data_test]



after this step, these two DataFrame do not change



This question appears to be off-topic. The users who voted to close gave this specific reason:





idownvotedbecau.se/imageofcode
– desertnaut
2 hours ago





@KeithZ as the question was closed because the code was an image, copying and pasting the code or accepting my edit which does that for you will help get your question off hold. See Minimal, Complete, and Verifiable example for details.
– Jake Symons
2 hours ago






Z B32,mT yd0ucpSt5MZL,F6084,rWd tfalTyRPOOv67Uy7ohKgO,aA,KBqGP BiMxeKLdVd5 jQm,Uln0PN7uMG1W7d,1mTi3Kf
-
ao1YPuGvaXLhddWiAKx1xDg9nnBSgv 9IF2kfttjh0XwYDRXrhs90EAArw9v3nDO,higJc,0SXnJByE1C04x6WCie oH

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