The pandas drop_duplicates function is great for "uniquifying" a dataframe. I would like to drop all rows which are duplicates across a subset of columns. Is this possible? A B C ...

Jun 16, 2018 · keep=last to instruct Python to keep the last value and remove other columns duplicate values. Suppose we want to remove all duplicate values in the excel sheet.

5 1. groupby.head(1) The relevant groupby method to drop duplicates in each group is groupby.head(1). Note that it is important to pass 1 to select the first row of each date-cid pair.

Aug 4, 2017 · How to drop duplicates based on two or more subsets criteria in Pandas data-frame Asked 8 years, 4 months ago Modified 3 years, 4 months ago Viewed 38k times

Nov 1, 2011 · In fact, despite the title "Python removing duplicates in lists", it doesn't seem like OP wanted to remove duplicates from within the same list at all. Rather, it looks like OP wanted to …

Oct 28, 2015 · If I want to drop duplicated index in a dataframe the following doesn't work for obvious reasons: myDF.drop_duplicates(cols=index) and myDF.drop_duplicates(cols='index') …

What's the most efficient way to drop only consecutive duplicates in pandas? drop_duplicates gives this:

pandas drop duplicates of one column with criteria Asked 11 years, 1 month ago Modified 10 years, 1 month ago Viewed 9k times

I want to open a file, read it, drop duplicates in two of the file's columns, and then further use the file without the duplicates to do some calculations. To do this I am using …

I have a dataframe with repeat values in column A. I want to drop duplicates, keeping the row with the highest value in column B. So this: A B 1 10 1 20 2 30 2 40 3 10 Should turn into this: A B ...