I am trying to find the start and end position of _ in a string as list of tuples. The code I used is For this the output obtained is How to get the start and end position of continuous located symbols as a list of tuple. Answer You should add the + quantifier. And since symbol could be a
Tag: python
Read multiple csv files into a single dataframe and rename columns based on file of origin – Pandas
I have around 100 csv files with each one containing the same three columns. There are several ways to read the files into a single dataframe, but is there a way that I could append the file name to the column names in order to keep track of the origin of the columns? I have now tried to import the
Pyspark agg max function showing different result
I was just studying some pyspark code and didnt understand these particular lines. I have a python code such as below: When showing empDF after Isn’t it supposed to show the longest list? It is showing [Python , R] as the output ? I dont understand how is this output coming? Answer Pyspark’s max f…
Global options for python-click MultiCommand
I’m implementing a classical CLI toolbox with python and I selected click as my argument parser. Adding a command should just be adding a file. From there the command is listed in the help and so on. This part is working through a click MultiCommand. What I didn’t achieve yet are global options li…
How to remove domain of a websites on pandas dataframe
Here’s the dataset Heres’s my expected output Answer You can use a regex to get the part before the first dot, combined with pop to remove the Website column: output:
Elegant way to plot average loss of many trains in tensorflow
I am running many iterations of a train so I can smooth out the loss curves. I would like an elegant way to average all the losses from history.history[‘loss’] but haven’t found an easy way to do it. Here’s a minimal example: If I wanted to plot just one example, I would do this: But i…
Display a stream images in Google Colab using OpenCV
I have a stream of images and have to display it in Google Colab notebook such that it looks like a video, But what I get is a image under image … Answer I don’t know if some function can display image in the same place. But I have code which I used with cv2 to display frames from webcam
How to generate 2-yaxis graphs on a panel data per id?
I have a dataset, df that looks like this: Date Code City State Quantity x Quantity y Population Cases Deaths 2019-01 10001 Los Angeles CA 445 0 0 2019-01 10002 Sacramento CA 4450 556 0 0 2020-03 12223 Houston TX 440 4440 35000000 23 11 … … … … … … … … … 2…
subtracting time intervals from column dates in dataframes Pandas Python
How would I be able to subtract 1 second and 1 minute and 1 month from data[‘date’] column? Answer Your date column is of type string. Convert it to pd.Timestamp and you can use pd.DateOffset:
Merging two dataframes on timestamp while preserving all data
I want to merge two dataframes to create a single time-series with two variables. I have a function that does this by iterating over each dataframe using itterows()… which is terribly slow and doesn’t take advantage of the vectorization that pandas and numpy provide… Would you be able to hel…