Posting minimal reproducible example I have a dataframe say I need to create a new column where values will be only from the alternate index. This is what I tried, but this does not work P.S : There are numerous ways in which this can be achieved I am looking for a more pandaic approach Answer You may need to
Tag: pandas
Pandas / I can’t format the data after Resample.Interpolate
I have these data coming from a csv file I did an interpolate with a 5 min period Here is the result Then I would like to keep only 2 digits so I did a test on the first column : But nothing has changed as a result Answer Did you save the result?
Is there any function to get multiple timeseries with .get and create a dataframe in Pandas?
I get multiple time series data in series format with datetimeindex, which I want to resample and convert to a dataframe with multiple columns with each column representing each time series. I am using separate functions to create the dataframe, for example, .get(), .resample(), pd.concat(). Since it is not f…
Select rows of a data frame in a loop based on list of indexes
I have one data frame & two (or multiple) lists of indexes: I want to create a loop where I can select the rows of data. for each iteration, I use one list. so for 1st iteration data has the rows shown in idx1 0,2,4. how I can do that ? This is a simplified example, in my actual code,
How to create pivot table from a pandas dataframe having string data types in the correct order
I have a dataframe which looks like below, Here is the same data in table format which you can copy/paste, Here is the same data in dictionary format which you can copy/paste, I tried using below code, but some of the SourceName was having wrong type, eg ‘peptide magainin’ should be a CHEMICAL, bu…
Replace multiple strings in place that match
I want to replace multiple strings in my list of dataframes that match. I cannot get these to match and replace in place, instead it produces additional row entries. Here’s the example data: I know that int_text is the same as extract_text, but in some instances I may only have one np.log for clean_text…
time data ‘2014-01’ does not match format ‘%y-%m’
im new to this python, and i want to convert month column from object to date in jupyter notebook using python. Here is my dataframe : and the code is : df[‘month’] = pd.to_datetime(df[‘month’], format = ‘%y-%m’) can anyone explain what is wrong with my code? cause i think …
Dealing with huge pandas data frames
I have a huge database (of 500GB or so) an was able to put it in pandas. The databasse contains something like 39705210 observations. As you can imagine, python has hard times even opening it. Now, I am trying to use Dask in order to export it to cdv into 20 partitions like this: However when I am trying to
Transform python dictionaries with keys and corresponding lists to pandas dataframe
I am trying to transform multiple dictionaries with keys and corresponding lists to a pandas dataframe and can’t get to the right way of transforming them. For the pandas data frame, the keys are the index column and the lists How can I transform python dictionaries with keys and corresponding lists (in…
How to divide in Panda Python
I generated the following code: In the second line of the code where I try to divide Second Dose by First Dose, I do not get the right results. Below an example of the output I get: Instead of getting 527.85 for % Partially Vaccinated I should get 5606041/5870786 = 0.95. Anyone knows what am I doing wrong in …