how to unstack (or pivot?) in pandas?
I have a dataframe that looks like the following: import pandas as pd datelisttemp = pd.date_range('1/1/2014', peri...
More effective way to use pandas get_loc??
Task: Search a multi column dataframe for a value (all values are unique) and return the index of that row. Curren...
Can I access ImageMagick API with Python??
I need to use ImageMagick as PIL does not have the amount of image functionality available that I am looking for. Ho...
Repeat function python?
I'm stuck at higher-order functions in python. I need to write a repeat function repeat that applies the function f ...
Automatically create requirements.txt?
Sometimes I download the python source code from github and don't know how to install all the dependencies. If there...
How do I use a TimeSeriesSplit with a GridSearchCV object to tune a model in scikit-learn??
I've searched the sklearn docs for TimeSeriesSplit and the docs for cross-validation but I haven't been able to fin...
How to ignore certificate in python 2.6??
In Python 2.7, I can do the below and it works: ctx = ssl.create_default_context() // function does not exist in py...
Why is numpy.linalg.pinv() preferred over numpy.linalg.inv() for creating inverse of a matrix in linear regression?
If we want to search for the optimal parameters theta for a linear regression model by using the normal equation wit...
What are the differences between type() and isinstance()??
What are the differences between these two code fragments? Using type(): import types if type(a) is types.DictT...
Prepend element to numpy array?
I have the following numpy array import numpy as np X = np.array([[5.], [4.], [3.], [2.], [1.]]) I want to inser...
Can random.uniform(0,1) ever generate 0 or 1??
In the documentation it is said that there is a chance that uniform(0,1) can generate the values 0 and 1. I have r...
Pythonic way to create union of all values contained in multiple lists?
I have a list of lists: lists = [[1,4,3,2,4], [4,5]] I want to flatten this list and remove all duplicates; or, i...
Negative indexing in Python [duplicate]?
This quest...
In python, what is the difference between random.uniform() and random.random()??
In python for the random module, what is the difference between random.uniform() and random.random()? They both gene...
What's the difference between %s and %d in Python string formatting??
I don't understand what %s and %d do and how they work. ...