How to Fix: NameError: name ‘true’ is not defined
This is a very common NameError for developers coming from other languages like JavaScript, Java, C++, or PHP. The error NameError true not defined often…
How to Fix: NameError: name ‘…’ is not defined (A Deep Dive)
This is the first, and most common, error every Python programmer encounters: NameError ‘…’ not defined. It has a very simple meaning: “You asked me…
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…
How to Fix: NameError: name ‘x’ is not defined in Python
Seeing NameError: name is not defined? This is Python’s most common typo error. Learn the 3 main causes and how to fix them instantly.
