How to Fix: IndexError: list assignment index out of range
This is a classic misunderstanding of how Python lists work compared to arrays in other languages. One common error is the IndexError list assignment issue,…
How to Fix: AttributeError: ‘list’ object has no attribute ‘x’
This AttributeError: ‘list’ object has no attribute ‘x’ means you are trying to use a specialized method (like a Pandas or Numpy feature) on a…
How to Fix: TypeError: ‘int’ object is not iterable
“Iterable” means “capable of being returned one at a time”. Lists, strings, and ranges are iterable. A single number (integer) is not, which is why…
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…
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…
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…
How to Fix: IndexError: string index out of range
If your Python script just crashed with an IndexError: string index out of range, you are dealing with a classic off-by-one error or a dirty…
How to Fix: SettingWithCopyWarning in Pandas
This isn’t technically an error (your code usually still runs), but if you’ve encountered the SettingWithCopyWarning, it’s a giant red warning that means “You might…
How to Fix: RuntimeError: dictionary changed size during iteration
Imagine you have a list of tasks, and you’re crossing them off one by one. If someone suddenly ripped half the page out while you…
How to Fix: PermissionError: [Errno 13] Permission denied
This error means Python tried to access a file or folder, resulting in a PermissionError: Permission denied, but the Operating System said “NO!” Cause 1:…
