I am beginner with python. From a log, I want with a python to extract only the hostname that are located in the middle of each line line ( between “command_wrappers INFO:” and “: pg_receivewal: switched to timeline”) in order to lauch a command to each of thoses servers. Here are the lines of the log: Here is the result
Tag: python
Matplotlib 3d scatter _facecolors3d not working
I am trying to save a 3d scatter plot animation where points appear one at a time. I made the animation work, but when I set the face colors of the points they do not take effect and all points appear blue. When I use the same color array but on static image, colors work well. Animation Code: When I
Trouble when adding values for NaN in DataFrame
I have this DataFrame: And I want to fill the NaN values with keyword taken from the description. To that end I created a list with the keywords I want: Finally, I want to loop over each row in the DataFrame. Split the contents from the “description” column in each row and, if that word is also in the “keyword”
morphological transformation opencv noob questiong
hope you all have good day today. so I’m here learning python,opencv on a raspberry pi and Im hoping that someone can explain what the code below do, I’ve read from https://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_imgproc/py_morphological_ops/py_morphological_ops.html and it doesn’t explain what iterations mean and how to choose the best one? and what’s the use for object detection, thank you. Answer It is quite an
Why do we use pyspark UDF when python functions are faster than them? (Note. Not worrying about spark SQL commands)
I have a dataframe: Output: Now, a simple – Add 1 to ‘v’ can be done via SQL functions and UDF. If we ignore the SQL (best performant) We can create a UDF as: and call it: Time: 16.5sec But here is my question: if I DO NOT use udf and directly write: Time Taken – 352ms In a nutshell,
PyTorch – RuntimeError: [enforce fail at inline_container.cc:209] . file not found: archive/data.pkl
Problem I’m trying to load a file using PyTorch, but the error states archive/data.pkl does not exist. Code Output Hypothesis I’m guessing this has something to do with pickle, from the docs: This save/load process uses the most intuitive syntax and involves the least amount of code. Saving a model in this way will save the entire module using Python’s
Pandas get column values based on duplicate rows
I have a sample DF: OP: I am trying to get the values of columns – “A” and “B” wherever there are duplicate values in column col. For example the column col has value Apple in index – 0,1,3,5 and I am trying to get the respective values in column – A and B, ie I have a iterative approach
How to quit Qt application before main window is displayed
On launch, my Qt application displays a dialog box with some options, before displaying the main window. The dialog box has a ‘Start’ and ‘Cancel’ button. The same dialog box is used at a later time, after the main window is displayed, when the user clicks on a ‘New Game’ button. I’m trying to have the ‘Cancel’ button quit the
Why can’t I define column names when I create the dataframe with pandas?
There are a few times when I have a dictionary (not very large) and try to convert it into a dataframe, the code above would yield one with each cell being NaN. Yet the code below works fine. I wonder what could be the difference? Answer What are your dictionary keys? I am guessing the keys don’t align to your
Model for measuring grammatical text quality [closed]
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 2 years ago. Improve this question I generate text via transformer models and I am looking for a way of measuring the grammatical text-quality. Like the text: