In this article, we will learn numerous ways to execute system commands in Python. ➥ Problem: Given an external command that can run on your operating system, how to call the command using a Python script? ➥ Example: Say you want to ping a remote server using your operating system’s ping command—all from within your Python program. How …
Python Delete File To delete a file in Python, import the os module with import os and run os.remove(filename) in your script. The following code removes the file ‘file.dat’ from the current folder assuming the Python script resides in the same directory: Python Delete Files in Folder To delete a folder or directory with all …
I love tweaking my coding workflow. Small improvements accumulate over time and can lead to a massive productivity increase. Today, I caught myself being annoyed that I always needed to spend three clicks or so just to open a Python file in IDLE, the default Python editor on Windows. Time to change that! Do you …
How to Open Python .py Files in IDLE with a Doubleclick? Read More »
Windows normally installs Python on one of the two locations: C:\Python39 C:\Users\YourUser\AppData\Local\Programs\Python\Python39 For me, it’s the latter. For you, it may be different—this article shows you how to check for yourself! 🙂 For your convenience, I’ve made a short gif that shows how I rushed through the code on my Windows machine: Before you start, …
How to Find Path Where Python is Installed on Windows? Read More »
Problem Formulation Given a filename and an integer n. How to read the first n lines of the file in your Python script? Here’s an overview of the solutions: Method 1: Store Head in a List of Strings To read the first n lines of a given file and store each line in a list …
Problem Formulation Given a JSON object stored in a file named “your_file.json” such as a list of dictionaries. How to append data such as a new dictionary to it? # File “your_file.json” (BEFORE) [{“alice”: 24, “bob”: 27}] # New entry: {“carl”: 33} # File “your_file.json” (AFTER) [{“alice”: 24, “bob”: 27}, {“carl”: 33}] Method 1: Using …
How to Append Data to a JSON File in Python? [+Video] Read More »
Are you confronted with a JSON file and at a loss to know how to extract wanted information, or you don’t know about JSON but would like to? Today we’ll introduce the JSON format and use Python to access a JSON file. We’ll extract the data we need and we’ll use the Python JSON module …
Subtitle: Avoid Hard-Coded Data While Making Your (And Others) Life Easier When the subject of config, or configuration, files comes up there is often confusion on what they are, how to read them, and the benefits that come from their use. In this article, we will cover what config files are before introducing the Python …
Creating, Reading & Updating A Config File with Python Read More »
If you have worked on a Python application where you had data in another folder, you would have used a command-line tool like cd to change directories. In this tutorial, we will learn a more Pythonic way of changing directories. Changing directories using the os.chdir function The easiest way to change the working directory in …
Problem Formulation Given the path to a text file such as /path/to/file.txt. How to read all the content from the file and print it to the Python standard output? Standard File Reading and Printing The standard approach to read the contents from a file and print them to the standard output works in four steps: …
How to Print the Content of a .txt File in Python? Read More »
Problem Formulation Given a Windows operating system on which you have the Microsoft Outlook email program installed. How to open Microsoft Outlook using only a function call in your Python script? Solution: os.startfile(‘outlook’) The easiest way to open Outlook on Windows using only a short and concise Python One-Liner is to use the os.startfile(‘outlook’) function …
Problem Formulation: How to Remove a Directory in Python? The rm command in Linux removes a specific directory. You can also add the options -r remove the directory recursively -f ignore nonexistent files and arguments and don’t prompt the user to ask for confirmation So, if you run rm -rf my_directory, it’ll forcefully remove my_directory …