I’m confused as to what for m in range(1, len(X_train)): is doing in the line model.fit(X_train[:m], y_train[:m]) y_train_predict = model.predict(X_train[:m]) . So I think that m is going to loop over the size of the training data.and that for each loop m+=1 but I don’t understand the rest Answer …
Edit excel file with openpyxl using Python
I have an excel file which I want to edit to include new datas and diagrams. I’m using this code : The execution went fine but nothing happened. Answer It was not a problem with python or the program itself. It was about the position in the terminal where you execute the program. If you write your path …
populate dataclass instance from other dataclass instance
I have a scenario where I’ve two dataclass which share some command keys. Let’s say and class B Both of this class share some key value. Now I want to assign those common key value from class A to to class B instance. One way I know is to convert both the class to dict object do the process and
PYQT QTimer does not start
I am using PyQt 5 for a GUI app, and I am having a threading issue. There is a close button and once it is clidked, a QTimer starts and then it waits in a while loop that is conditioned on a value of a variable in which is being incremented in the QTimer handler. The problem is that the
Numpy insert matrix values with matrix index
I have the following code which creates a 4D grid matrix and I am looking to insert the rolled 2D vals matrix into this grid. If vals would be a 1D array and I would use a 1D insert_map array as a reference it would work, however using it in multiple dimensions seems to be an issue and it raises
Failed to set remote answer sdp: Called in wrong state: stable
I am trying to write a WebRTC application using socket.io. The signalling server is written in python and looks like this. The client side looks like this Also i use this code for client as socket.io https://github.com/socketio/socket.io/blob/master/client-dist/socket.io.js When two people are in the connecti…
Skip the input function with timeout
I’m making any program in Python 3.7. I want to skip input function after a specific time. My code has the structure like the following rough code. I wanna skip the line TXT = input(“Enter: “) after TIMEOUT time, 0.5 sec. How can I make the code of this flow the way I want? Answer You can us…
Create a new category by using a value from another column
My dataset currently has 1 column with different opportunity types. I have another column with a dummy variable as to whether or not the opportunity is a first time client or not. I would like to create a new category within col_opptype based on col_first. Where only 1 category (i.e. a) will be matched to its…
pandas groupby dataframes, calculate diffs between consecutive rows
Using pandas, I open some csv files in a loop and set the index to the cycleID column, except the cycleID column is not unique. See below: This prints the 2 columns (cycleID and mean) of the dataframe I am interested in for further computations: The objective is to use the rows corresponding to the same cycle…
Compute sum of power of large sparse matrix
Given a query vector (one-hot-vector) q with size of 50000×1 and a large sparse matrix A with size of 50000 x 50000 and nnz of A is 0.3 billion, I want to compute r=(A + A^2 + … + A^S)q (usually 4 <= S <=6). I can above equation iteratively using loop but I want to more fast method. First