HashMaps (aka: Dictionaries) in Python
Introduction
Java has a built-in called HashMap. It allows you to store and very quickly retrieve key value pairs.
In Python, this is called a …
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403 articles about python development, tools, and best practices
Get The Shortest Path in Binary Matrix using Python
The challenge
In an N by N square grid, each cell is either empty (0) or blocked (1).
A clear path from top-left to bottom-right has length k if and …
Palindrome Partitioning in Python
The problem
Given a string s, partition s such that every substring of the partition is a palindrome.
Return all possible palindrome partitioning of s …
Read Article →Best Time to Buy and Sell Stock with Python
The problem
Say you have an array prices for which the ith element is the price of a given stock on day i.
Design an algorithm to find the maximum …
Read Article →Self Dividing Numbers using Python
Introduction
A self-dividing number is a number that is divisible by every digit it contains.
For example, 128 is a self-dividing number because 128 % …
RuntimeError: thread.__init__() not called (Python)
Today I got a really dumb error from Python.
RuntimeError: thread.init() not called
But luckily it’s really easy to fix!
Below is the code …
Read Article →How to get the UTC Timestamp in Python
All dates in your server applications should be stored in the UTC timezone.
This is because you always want to store time without the offset of the …
Read Article →How to make an HTTP Request in AWS Lambda using Python
The requests module for Python is very useful in helping simplify HTTP/s requests from Python, but how would you use it in an AWS Lambda script? …
Get the Maximum Length of a Concatenated String with Unique Characters in Python
The problem
Given an array of strings arr. String s is a concatenation of a sub-sequence of arr which have unique characters.
Return the maximum …
Read Article →How to get the last element of a list in Python
Let’s say that you have a Python list with the following 5 foods:
foods = ["pizza", "pasta", "steak", "chicken", …How to embed a web server in your Python3 app
This is not the first time that I created a Python3 application that spat out some output and required access to it via an HTTP server.
While there …
Read Article →How to duplicate zeros in place using Python
Given a fixed length array arr of integers, duplicate each occurrence of zero, shifting the remaining elements to the right.
Note that elements beyond …
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