I have an image of dimension 155 x 240. Like the following: I want to extract certain shape of patchs (25 x 25). I don’t want to patch from the whole image. I want to extract N number of patch from non-zero (not background) area of the image. How can I do that? Any idea or suggestion or implementation w…
Tag: python-3.x
Calculating a for loop with different indexes simultaneosuly
I have the following for function: This for loop takes a long time to calculate the values for the data frame as it has to loop 50 times for each row (it takes approximately 62 seconds) I tried to use multiprocessor pool from this question. My code looks like this now: I run the function asynchronously with d…
Checking if list element in list of lists and returning sublist
I have two lists and want to return those sublistst of list2 that contain elements of list1. So far I tried using any: and a naive approach But I only managed to repeat empty list. The result should be Not sure, where I’m going wrong. Is there maybe a way using list comprehensions or mixing list compreh…
How can I convert a list of strings to an array of float numbers?
I’m trying to convert a list of strings to an array of callable float numbers in Python, but I encounter an error. Here is a part of my code: Answer You can use a nested list comprehension for this. The first can iterate through your strings, then for each string you can str.split and convert each eleme…
Adding a static header in a csv file to fill all rows with a word
I am collecting names and numbers and exporting it into a csv file. column A is = names column B is = numbers How can I get column c to fill all rows with “Phoenix” so that every column that has a name or number in it column c would say phoenix? Answer There is the columns c with phoenix.
Getting all starting dates of year 2020 with ISO week frequency
I’d like to create a list of dates each of which represents the starting date of ISO week N of year 2020. Something like: I have obtained something similar using timedelta(weeks=1), and adding this to my START_DATE (date(2020, 1, 1)), but the dates I obtain are not correct. I know I could simply change …
Is it posible to find index-row and values with QRegExp with search name?
I want to find the row-index with searching word using with QSortFilterProxyModel and QtCore.QRegExp. I want to create a list with “mobile” and “email” columns only from the row which is finding from the variable of QRegExp. Below is example code: I want to print the row.index and inse…
Groupby for value before previous row
How do i add a boolean if the value is lower than the value for the row above, per fruit? And if so the average of the previous 5 years Answer Try this: Output:
Virtual environment is active, but nothing is actually affected in Python 3 [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 2 y…
finplot as a widget in layout
I am trying to add finplot, https://pypi.org/project/finplot/, as a widget to one of the layouts in my UI. I created a widget for finplot and added it to the widgets in the layout but I get the following error: Here is the code that I used. Answer The create_plot_widget() function creates a PlotItem that cann…