Interactively validating Entry widget content in tkinter
What is the recommended technique for interactively validating content in a tkinter Entry widget?
python
Pandas: how to merge two dataframes on a column by keeping the information of the first one?
I have two dataframes df1 and df2. df1 contains the information of the age of people, while df2 contains the information of the sex of people. Not all the people are in df1 nor in df2
How to return a dict as a JSON response from a Flask view?
I have a function that analyzes a CSV file with Pandas and produces a dict with summary information. I want to return the results as a response from a Flask view. How do I return a JSON response?
Running shell command and capturing the output
I want to write a function that will execute a shell command and return its output as a string, no matter, is it an error or success message. I just want to get the same result that I would have gotten with the command line.
Check if a given key already exists in a dictionary
Check if a given key already exists in a dictionary
Syntax error on print with Python 3
Why do I receive a syntax error when printing a string in Python 3? >>> print "hello World" File "<stdin>", line 1 print "hello World" ^ SyntaxError: invalid syntax 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. So please … Read more
Pygame window not responding after a few seconds
This simple piece of code crashes (the window is not responding) after a few seconds (around 5).
Why can’t I call read() twice on an open file?
For an exercise I’m doing, I’m trying to read the contents of a given file twice using the read() method. Strangely, when I call it the second time, it doesn’t seem to return the file content as a string?
Why is __init__() always called after __new__()?
I’m just trying to streamline one of my classes and have introduced some functionality in the same style as the flyweight design pattern.
How to parse data in JSON format?
My project is currently receiving a JSON message in python which I need to get bits of information out of. For the purposes of this, let’s set it to some simple JSON in a string: