Remove duplicates from DataFrame view

Question

I have code similar to this:

df = raw_report[some_columns].copy()
df.drop_duplicates(inplace=True)

I used copy() to avoid a warning about uncertainty wrt view / copy. However, I'd like to use a view, because later I only read from this DataFrame . The line that generated the warning was the line that removes duplicates, so I assume it doesn't generate a view.

Thus, my question: is there a way to remove duplicates from the view? Or, rather, is there a way to refine a view such that it doesn't contain duplicates?

Answer 1

我认为您只需要通过DataFrame.drop_duplicates某些列来放置重复项的参数子集：

raw_report.drop_duplicates(subset=[some_columns],inplace=True)