Sort list by frequency
Is there any way in Python, wherein I can sort a list by its frequency?
indexing
Find the indexes of all regex matches?
I’m parsing strings that could have any number of quoted strings inside them (I’m parsing code, and trying to avoid PLY). I want to find out if a substring is quoted, and I have the substrings index. My initial thought was to use re to find all the matches and then figure out the range of indexes they represent.
Pandas max value index
I have a Pandas DataFrame with a mix of screen names, tweets, fav’s etc. I want find the max value of ‘favcount’ (which i have already done) and also return the screen name of that ‘tweet’
Insert element in Python list after every nth element
Say I have a Python list like this:
How to efficiently assign unique ID to individuals with multiple entries based on name in very large df
I’d like to take a dataset with a bunch of different unique individuals, each with multiple entries, and assign each individual a unique id for all of their entries. Here’s an example of the df:
Understand Python swapping: why is a, b = b, a not always equivalent to b, a = a, b?
As we all know, the pythonic way to swap the values of two items a and b is
Finding the indices of matching elements in list in Python
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
Pandas – Compute z-score for all columns
I have a dataframe containing a single column of IDs and all other columns are numerical values for which I want to compute z-scores. Here’s a subsection of it:
Python: Removing Rows on Count condition
I have a problem filtering a pandas dataframe.