I want to plot a graph with a lot of ticks on the X axis using the following code: The resulting plot looks like this: As you can see, the X axis is a mess because the tick labels are plotted with too few space between them or even overlap. I would like to create constant space between each tick
Tag: python
async exec in python
I’d like to call exec in an async function and do something like the following code (which is not valid): More precisely, I’d like to be able to wait for a future inside the code that runs in exec. How can this be achieved? Answer Note: F-strings are only supported in python 3.6+. For older versio…
Access webcam using OpenCV (Python) in Docker?
I’m trying to use Docker for one of our projects which uses OpenCV to process webcam feed (Python). But I can’t seem to get access to the webcam within docker, here’s the code which I use to test webcam access: And here’s what I tried so far, All of these return False, what am I doing …
Pandas: Resample dataframe column, get discrete feature that corresponds to max value
Sample data: gives: I want to resample by ‘2D’ and get the max value, something like: The expected result should be: Can anyone help me? Answer You can resample to get the arg max of value and then use it to extract names and value
Python name error in LInux terminal when the input is defined
I am running python 3.6 on Linux. When I use the python shell to test the code, it works as it is supposed to do. However, if run from the linux terminal, I get a name error. Then after inputting a name from the linux terminal, I get the following error: I know that if run on python 2, you
Join pandas dataframes based on column values
I’m quite new to pandas dataframes, and I’m experiencing some troubles joining two tables. The first df has just 3 columns: DF1: And the second has exactly same two columns (and plenty of others): DF2: What I need is to perform an operation which, in SQL, would look as follows: And, as a result, I…
Iterate over list selecting multiple elements at a time in Python
I have a list, from which I would like to iterate over slices of a certain length, overlapping each other by the largest amount possible, for example: In other words, is there a shorthand for zip(seq, seq[1:], seq[2:]) where you can specify the length of each sub-sequence? Answer [seq[i:i+3] for i in range(le…
Why isn’t my for loop working for my expression?
I want this function to read a password, and check to see if it has at least 1 number in it. If not, it needs to return False. I need to use a for loop with the range function and this is what I have: I’ve tried different variations and it’s driving me crazy. Can someone possibly explain to a
Count duplicate lists inside a list
I want the result to be 2 since number of duplicate lists are 2 in total. How do I do that? I have done something like this But the count value is 1 as it returns matched lists. How do I get the total number of duplicate lists? Answer Solution You can use collections.Counter if your sub-lists only contain num…
Resize image to maintain aspect ratio in Python, OpenCv
I’d like to get a 1000 x 1000 picture in Python from any input picture so that the input doesn’t lose it’s aspect ratio. In other words, I want to resize the input so that its longer dimension is 1000 pixels and “fill” the other dimension with the background color until it become…