Efficiently detect sign-changes in python
I want to do exactly what this guy did:
I want to do exactly what this guy did:
I’m working on something like an online store. I’m making a form in which the customer buys an item, and she can choose how many of these item she would like to buy. But, on every item that she buys she needs to choose what its color would be. So there’s a non-constant number of fields: If the customer buys 3 items, she should get 3 <select> boxes for choosing a color, if she buys 7 items, she should get 7 such <select> boxes.
I have a long list of float numbers ranging from 1 to 5, called “average”, and I want to return the list of indices for elements that are smaller than a or larger than b
When you want to plot a numpy array with imshow, this is what you normally do:
How do I limit os.walk to only return files in the directory I provide it?
I want to control global variables (or globally scoped variables) in a way that they are set only once in program initialization code, and lock them after that.
I have a Python 2.7.11 installed on one of my LAB stations. I would like to upgrade Python to at least 3.5.
In Python, once I have imported a module X in an interpreter session using import X, and the module changes on the outside, I can reload the module with reload(X). The changes then become available in my interpreter session.
I need a list with the following behavior
I would like to take a multi-page pdf file and create separate pdf files per page.