How to sort a dataFrame in python pandas by two or more columns?
Suppose I have a dataframe with columns a, b and c, I want to sort the dataframe by column b in ascending order, and by column c in descending order, how do I do this?
Python
pygame – How to display text with font & color?
Is there a way I can display text on a pygame window using python?
How do I find the duplicates in a list and create another list with them?
How can I find the duplicates in a Python list and create another list of the duplicates? The list only contains integers.
Manually raising (throwing) an exception in Python
How can I raise an exception in Python so that it can later be caught via an except block?
Using global variables between files?
I’m bit confused about how the global variables work. I have a large project, with around 50 files, and I need to define global variables for all those files.
Setting the correct encoding when piping stdout in Python
When piping the output of a Python program, the Python interpreter gets confused about encoding and sets it to None. This means a program like this:
How to prompt for user input and read command-line arguments
The following code is a Python program that takes a list of integers
and produces either the sum or the max:
How to send email attachments?
I am having problems understanding how to email an attachment using Python. I have successfully emailed simple messages with the smtplib. Could someone please explain how to send an attachment in an email. I know there are other posts online but as a Python beginner I find them hard to understand.
Why does this iterative list-growing code give IndexError: list assignment index out of range?
Please consider the following code:
How can the Euclidean distance be calculated with NumPy?
I have two points in 3D: