Working with Dates and Times in Pandas (DatetimeIndex)
If you load a CSV with dates, Pandas usually reads them as simple strings (objects). To do real analysis like “Calculate monthly average sales“, you…
Browser Automation with Selenium: Controlling Chrome with Python
Sometimes requests and BeautifulSoup aren’t enough. For a comprehensive solution, look no further than this Selenium Python Guide. Modern websites use JavaScript to load data,…
How to Fix: NameError: free variable ‘x’ referenced before assignment in enclosing scope
Encountering a NameError related to a free variable can be quite daunting. This is a scarier version of the <a href="https://pythonprohub.com/python-errors/unboundlocalerror-local-variable-referenced-before-assignment/">UnboundLocalError</a> we saw earlier. It…
Python Context Managers: The Magic Behind the ‘with’ Statement
You already use them all the time: Python Context Managers. This with block is a Context Manager. It guarantees that f.close() is called when the…
Image Processing with Python: Resizing and Converting Images with Pillow
Editing one photo is easy. But with Python Image Processing, editing 500 photos doesn’t have to be a nightmare. Python’s Pillow library (a friendly fork…
Deep Dive: Fixing tricky ModuleNotFoundError in Complex Projects
We’ve covered basic import errors before. But what if you have a complex project structure and Python just won’t find your files? This could lead…
Automate Your Security: Build a Python Backup Script
We all know we should back up our files, but we often forget. Let’s write a Python Backup Script to do it for us. We…
Introduction to SQLAlchemy: Managing Databases in Pure Python
For those getting started with SQLAlchemy Beginner Guide can be highly beneficial. You know how to use Django Models to talk to a database. But…
How to Fix: SyntaxError: EOL while scanning string literal
EOL stands for “End of Line”. The SyntaxError EOL indicates an error where “Python reached the end of the line, but you were still in…
Understanding if __name__ == ‘__main__’: What Does It Mean in Python?
You’ve seen this weird block of code, often starting with “if name == main”, at the bottom of almost every professional Python script. What is…
