How to add noise (Gaussian/salt and pepper etc) to image in Python with OpenCV
The Function adds gaussian , salt-pepper , poisson and speckle noise in an image
python
Attribute Error: ‘list’ object has no attribute ‘split’
I am trying read a file and split a cell in each line by a comma and then display only the first and the second cells which contain information regarding the latitude and the longitude.
This is the file:
How are deques in Python implemented, and when are they worse than lists?
I’ve recently gotten into investigating how various data structures are implemented in Python in order to make my code more efficient. In investigating how lists and deques work, I found that I can get benefits when I want to shift and unshift reducing the time from O(n) in lists to O(1) in deques (lists being implemented as fixed-length arrays that have to be copied completely each time something is inserted at the front, etc…). What I can’t seem to find are the specifics of how a deque is implemented, and the specifics of its downsides v.s. lists. Can someone enlighten me on these two questions?
Python – Requests, Selenium – passing cookies while logging in
I would like to integrate python Selenium and Requests modules to authenticate on a website.
How do I make a fixed size formatted string in python?
10s format a string with 10 spaces, left justified by default
multiprocessing.Pool() slower than just using ordinary functions
(This question is about how to make multiprocessing.Pool() run code faster. I finally solved it, and the final solution can be found at the bottom of the post.)
Binary random array with a specific proportion of ones?
What is the efficient(probably vectorized with Matlab terminology) way to generate random number of zeros and ones with a specific proportion? Specially with Numpy?
Numpy: Creating a complex array from 2 real ones?
I want to combine 2 parts of the same array to make a complex array:
How do you reload a Django model module using the interactive interpreter via “manage.py shell”?
I know how to reload a regular Python module within a regular Python interpreter session. This question documents how to do that pretty well: