I have a large Pandas DataFrame (~800M rows), which I have indexed on a MultiIndex with two indices, an int and a date. I want to retrieve a subset of ...

I have a DataFrame with multiple index levels. I define some subset by selecting multiple combinations of all levels but the last. Then I want to slic ...

I am needing some assistance on optimizing this WordPress/WooCommerce query: I do not understand what EXPLAIN is telling me and need some guidance ...

I have a dataframe that is organised hierarchically. Consider this: What I need to do is create a new dataframe, that collapses the intermediate le ...

[Using python 3.9] I have a large df with the following stylized structure: The original df has many such blocks next to each other, and only th ...

Two dataframes have been concatenated with different keys (multiindex dataframe) with same index. Dates are the index. There are different products in ...

I have a dataframe that looks something like this And I would like to create new rows for utilities-state combinations with missing months. So the ...

I have created a DataFrame with a MultiIndex in the columns, which I want to create as an empty DataFrame and add columns and values iteratively. I wa ...

The following piece of code works as expected, with no warnings. I create a dataframe, create two sub-dataframes from it using .loc, give them the sam ...

I have this dataframe with multiple headers I read it as I would like to get the value of the first level according to the level 0 value. I try ...

I have this dataframe with multiple headers I read this as I would like to remove the columns 01090BL, 01100MS. The idea, in the main program, i ...

I have this dataframe with multiple headers I read this as I would like to extract the value related the rows named 'lat' and 'long'. A easy way ...

I am trying to filter my multi-indexed data df based on the column value employ_start_date and index employ_class . which can separetely be obtaine ...

I initially had this dataframe: df = pd.DataFrame({'slide': [0, 0, 1, 1, 2, 2, 0, 0], 'time': [1673, 17892, 1132, 6173 ...

I created this dataframe: but I need to change order in column multiindex. I need to have something like this Could you help me :) ? ...

I have a Dataframe with the following structure: I would like to add a new calculated column "Z" for each Node, based on the value "X" ** 2 + "Y" * ...

My current DF looks like: My DF has a lot of rows, and I need to change the value of column 2 based on whether the user_id is in a particular set c ...

I have a dataframe that counts the number of times an event has occured per user per day. Users may have 0 events per day and (since the table is an a ...

I have a sorted Multi-Index pandas data frame, which I need to plot in a bar chart. My data frame. I either didn't find the solution yet, or the simp ...

I have a Pandas data frame with a multiindex that is filtered (interactively). The resulting filtered frame have redundant levels in the index where a ...