I am trying to write a numpy function that iterates with itself to update the values of its function. If for example Random_numb was equal to [50, 74, 5, 69, 50]. So the calculations would go like, 10* 50 = 500 for the first calculation, with the equation Starting_val = Starting_val * Random_numb. The Startin…
Convert List of list into tuple of tuples
I have a list of 2×1 matrices like: I need to convert it into a tuple of tuples, like: I know I can loop through the list and convert it manually , trying to check if there is a better-optimized way of doing it. Answer You can do it this way using numpy indexing and slicing that outer dimension. Output:
Why true immutability is impossible in Python?
I was reading the documentation for attrs. It says: Please note that true immutability is impossible in Python I am wondering what is the reason for that. Why someone cannot have an immutable list in Python while it is possible in C++? What is the main difference here? Answer TLDR; “True Immutability…
Selenium – can not find element in headless mode
When I run my selenium program normally it works, but when I turn on the headless mode it does not find an element. I am using these driver options: I am working in python. I added those options in between because someone said that it would help, but it does not. Answer When I change the device name form Pixe…
Generating 1000 iterations
I am trying to generate 1000 sets of data points using fake_exp_y_values generator. All I am trying to do is to calculate the chi2 values for all 1000 iterations with different fitting models. But the way I code it right now only gives me back one chi2 value. I don’t understand what is wrong. Here is my…
stats.ttest_ind() vs. “manual” computation of Student’s independent t-test: different results
I am comparing stats.ttest_ind() vs “manual” computation of the same test, and get different results. stats.ttest_ind() method: Out: Manual method: Out: We can see there’s a small difference. Why? Maybe because of how stats.ttest_ind() computes degrees of freedom? Any insight much appreciate…
Is there a better way to use a function from a different .py file?
I am making an agent that uses different sets of functions to solve different types of problems. My issue is – there are many different types of problems to solve, so I have many, many different functions that the agent needs to use. My main .py file is likely going to end up at least 1000 lines, which …
Non-zero binary accuracy but 0 accuracy in Keras classifer
I’m trying to train an LSTM classifier in TensorFlow. Here is a reproducible example Using BinaryAccuracy: Using Accuracy: I have used the ‘Accuracy’ metric for binary classification before, can someone explain why this is happening? Answer The metric is ‘accuracy’, not ‘Ac…
Replace an exact substring in column value
The ‘Last year (2019)’ should be replaced with ‘LY’ I tried this but it did not work. I have tried several regex attempts using ‘b’ but nothing seems to work. Any help is apprecciated Answer Following may help you here, you need to escape ( and ) to make it treat like as a …
How to make button using canvas in toplevel() Tkinter
I’m trying to make a button using canvas.create_window in toplevel() in Tkinter. Button is used to go back to main window. First “Start” button is displayed but second “Back” button is not. Code below. Answer The problem is the ordering of creation of canvas_two and button_back. …