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Alias one-to-many relationship

I have a User object and that user object can have various Answers objects tied to it. I would like to be able to do the following: This is the current way I am doing it — via a @property, but I’m wondering if there is a cleaner or more ‘built-in’ way to do this: Is there a better way

create multiple excel files with the data in dataframe using python

I have a sample dataframe1 How do I iterate through the manager column in such a way that rows/data of one manager should be saved in excel and the rows/data of another manager should be saved in another excel? desired result first excel data (filename: ABC – XYZ, MNO) second excel data (filename: XYZ – KLM, EFG, HIJ) Answer Actually

Delete duplicates if multiple fields follow conditions?

I had a simple Excel task to do today that I figured i’d use some Python to clean up. This led me to pandas and numpy.This is what i’d like to know if possible: I have these columns and about 5k rows: First Name | Last Name | Email | Address | City I want to remove duplicates that fall

How to collect wait()’d co-routines in a set?

I have been attempting to generate a ping scan that uses a limited number of processes. I tried as_completed without success and switched to asyncio.wait with asyncio.FIRST_COMPLETED. The following complete script works if the offending line is commented out. I’d like to collect the tasks to a set in order to get rid of pending = list(pending) however pending_set.union(task) throws

*args in Python in combination with numpy.add()

Is there a way to add two arrays together with add function, using variable arguments? I know this example is wrong, but it’s just to get the idea Answer If all you want to do is add the arrays component-wise, you can use +, which works on numpy arrays. Alternatively, as you’ve already pointed out, you can use np.add instead.

how to use more three channels input in train_datagen

I am trying to apply Keras for images with more than three spectral channels. I noticed that train_datagen handles images with three channels based on color_mode=’rgb’. Is there any way to increase the number input channels or are there any alternative methods? Answer You can have 1, 3 or 4 channels. See the docs. color_mode One of “grayscale”, “rgb”, “rgba”.

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