How to Calculate Powers of 2 in Python
The challenge
Complete the function that takes a non-negative integer n as input, and returns a list of all the powers of 2 with the exponent ranging …
Technical Articles
In-depth guides, insights, and best practices for modern software engineering
How to Get Planet Name By ID in Python
The challenge
Create a function that takes in an id and returns the planet name.
The solution in Python code
Option 1:
def get_planet_name(id): …How to Make a Directory if Not Exists in Python
If you want to create a directory in Python, but only if it doesn’t exist, you have the following option.
This comes up constantly when writing …
Read Article →Square(n) Sum in Python
The challenge
Complete the square sum function so that it squares each number passed into it and then sums the results together.
For example, for [1, …
How to Fill an Array in Python
The challenge
We want an array, but not just any old array, an array with contents!
Write a function that produces an array with the numbers `` to N-1 …
How to Fix the ‘Bad Interpreter’ Error from AWS and Python 3.7
This error often looks something like:
.zshrc: /usr/local/bin/aws: bad interpreter:
/usr/local/opt/python/bin/python3.6: no such file or directory …Retrieve records from MSSQLServer in Python
The below Python code will create a connection to a MSSQLServer instance, and retrieve data from it back into a variable called tblResults.
# use …How to Remove Trailing Zeroes in Python
The challenge
Numbers ending with zeros are boring.
They might be fun in your world, but not here.
Get rid of them. Only the ending ones.
1450 -> …How to use Profilers in Python
When you have performance problems in your Python application, you can use a Profiler to help you.
Step 1: Using cProfile
Your first option is to run …
Read Article →If you can’t Sleep, just count Sheep in Python
The challenge
Given a non-negative integer, 3 for example, return a string with a murmur: "1 sheep...2 sheep...3 sheep...". Input will …
Key-Value CLI Arguments in Python
If you have a CommandLine application (CLI) written in Python, you have a number of ways that you can take arguments from the user.
You could take the …
Read Article →How to use a Translation Table to Replace Characters in Python
Python provides the ability to create Translation Tables.
our_text = "This is an example of some text"
translation_table = …How to Calculate the Sum of all Numbers in a String in Python
Let’s take the following string:
numbers = "this 1 2 3 4 5 is not a 8 9 10"
How can we sum up all the numbers in this string? …
Read Article →Python String Permutations (No itertools)
The quick way: using itertools
Python’s itertools.permutations handles this in one line:
from itertools import permutations
perms = sorted([ …How to Fix ‘no basic auth credentials’ with Docker and AWS ECR
If you are trying to push a Docker image to AWS ECR (Elastic Container Registry) and you get a no basic auth credentials error. Then you can easily …
How to Reverse Words or Sentences in Python
Let’s take the following sentence:
words = "These are some words"
We can use slices to reverse the order of the string:
print( …How to solve AttributeError: ‘int’ object has no attribute ‘split’ – make: [sharedmods] Error 1
If you get the following error while trying to install something via Homebrew
AttributeError: 'int' object has no attribute 'split' - make: *** …
How to Push a Docker image to AWS ECR
By default, Docker pushes its images to Docker Hub.
While Docker Hub is a great way to share both your public and private images, you may find the …
Read Article →Complete Guide: How to Base64 Encode a String in Python | Python Base64 Encoding Explained
How to Base64 Encode a String in Python: A Comprehensive Guide
Welcome to our comprehensive guide on how to python base64 encode a string in Python. …
How to Get 10 Random Numbers in Python
The random module allows you to generate choices.
import random
print(random.choices([i for i in range(1000)], k=10))
This might give us back …
Read Article →Get the Middle Character in Python
The challenge
Return the middle character of the word. If the word’s length is odd, return the middle character. If the word’s length is …
Read Article →Convert String to Datetime in Python
If you have a string and want to create a Datetime object out of it in Python, then you can use the Datetime Parse Time method, as follows:
from …How to Abort SQL statements after a set time in MariaDB
Sometimes you don’t want a SELECT query to run for more than a set amount of time.
This is a roundabout way to make your server doesn’t …
Read Article →Multiprocessing Pools in Python
Python ships with a multiprocessing module that allows your code to run functions in parallel by offloading calls to available processors.
In this …
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