Flask-SQLalchemy update a row’s information
How can I update a row’s information?
Python
Single Line Nested For Loops
Wrote this function in python that transposes a matrix:
How to multiply individual elements of a list with a number?
S = [22, 33, 45.6, 21.6, 51.8] P = 2.45 Here S is an array How will I multiply this and get the value? SP = [53.9, 80.85, 111.72, 52.92, 126.91] Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. … Read more
List of all available matplotlib backends
The current backend name is accessible via
How to check if one dictionary is a subset of another larger dictionary?
I’m trying to write a custom filter method that takes an arbitrary number of kwargs and returns a list containing the elements of a database-like list that contain those kwargs.
Tkinter.PhotoImage doesn’t not support png image
I am using Tkinter to write a GUI and want to display a png file in a Tkiner.Label.
So I have some code like this:
How does Python’s “super” do the right thing?
I’m running Python 2.5, so this question may not apply to Python 3. When you make a diamond class hierarchy using multiple inheritance and create an object of the derived-most class, Python does the Right Thing (TM). It calls the constructor for the derived-most class, then its parent classes as listed from left to right, then the grandparent. I’m familiar with Python’s MRO; that’s not my question. I’m curious how the object returned from super actually manages to communicate to calls of super in the parent classes the correct order. Consider this example code:
How to check if there exists a process with a given pid in Python?
Is there a way to check to see if a pid corresponds to a valid process? I’m getting a pid from a different source other than from os.getpid() and I need to check to see if a process with that pid doesn’t exist on the machine.
How to programmatically set a global (module) variable?
I would like to define globals in a “programmatic” way. Something similar to what I want to do would be:
Output pyodbc cursor results as python dictionary
How do I serialize pyodbc cursor output (from .fetchone, .fetchmany or .fetchall) as a Python dictionary?