I have a csv file which is comma separated. One of the columns has data which is again comma separated. Each row in that specific column has different no of words , hence different number of commas. When I access or perform any sort of operation like filtering (after splitting the data) it throws errors in py…
What is the more efficient way to create a pairwise 2D array for a 1D numpy array?
Given 2 numPy arrays of length N, I would like to create a pairwise 2D array (N x N) based on a custom function. I would like to create an array C of size NxN. such that Example: I would like to create I know I can do this by nested loop: but looking for a neat and more efficient
InvalidImageFormatError Exception The source file does not appear to be an image
So I am using fallback default image to avoid 500 error and it is not successful. I keep getting the same error “InvalidImageFormatError: The source file does not appear to be an image”. In my case I try to thumbnail an image that does not exist. But it is assumed that if the image does not exist …
Python regex match string of 8 characters that contain both alphabets and numbers
I am trying to match a string of length 8 containing both numbers and alphabets(cannot have just numbers or just alphabets)using re.findall. The string can start with either letter or alphabet followed by any combination. e.g.- Input String: The reference number is 896av6uf and not 87987647 or ahduhsjs or hn0…
Django-filter: count data
Does anybody knows how can I use count based on selected value using django_filters Error My Reference link views.py filters.py user_list.html I want to count all the list base from data I filtered Answer You’ll want the count of the resulting queryset, which you can get from the filter’s qs prope…
from tkinter import * showing SyntaxError when used inside function
Here I am using from tkinter import * inside a function and when I am running the code it is showing me a SyntaxError. Please tell me how I can use from tkinter import * inside a function. Answer You should move the import statements to the beginning of the file, at the top. You are also importing tkinter twi…
Error: UnboundLocalError: local variable ‘attempts’ referenced before assignment
I am attempting to make a simple guessing game for my class with graphics and I’m trying to make an attempt counter. This is the area where my code is going wrong. The error I receive is: It doesn’t seem possible to move attempts into the function as it constantly calls itself, resetting attempts …
Is there a more efficient way to find and downgrade int64 columns with to_numeric() in Python Pandas?
tl;dr: Need help cleaning up my downcast_int(df) function below. Hello, I’m trying to write my own downcasting functions to save memory usage. I am curious about alternatives to my (frankly, quite messy, but functioning) code, to make it more readable – and, perhaps, faster. The downcasting functi…
How to upscale an image so that the result is not blurry or black?
I’m using the following code in order to upscale an image. However, this is not working as expected, as image2 becomes black. I really want to produce a new array, because I will be saving this array as an image to the file system. Specifically, I will create a gif animation from the upscaled version of…
How many epochs does scikit learn use when cross validating?
I’m doing some model cross validation with scikit learn in time series data where a Multi Layer Perceptron is trained with Keras. (We are able to use cross_val_score from scikit learn thanks to the keras wrapper). Basically using: The issue is I don’t understand how many epochs its using on each t…