Python error explained
NameError: what it means and how to fix it
You used a name Python has never seen.
The message
NameError: name 'totl' is not definedWhat it means
Python looked for a variable or function with that exact name and could not find one. Names are case sensitive, so Total and total are different, and a name only exists after the line that creates it has run.
Common causes
- A typo in the variable name
- Different capitals, like Score and score
- Using a variable before the line that sets it
- Forgetting the quotes around text, so Python thinks the word is a variable
Example that raises it
prices = [3.50, 2.25, 4.00]
total = sum(prices)
print(f"Total: £{totl:.2f}")
The fix
prices = [3.50, 2.25, 4.00]
total = sum(prices)
print(f"Total: £{total:.2f}")
Tip: Copy the name from where you created it instead of retyping it. If the word was meant to be text, put it in quotes.
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