what is nameerror in python

title: understanding nameerror in python: a comprehensive tutorial with code examples
nameerror is a common exception in python that occurs when a local or global name is not found. this error typically arises when a variable or function is referenced before it has been defined. this tutorial will explore the reasons behind nameerror and provide code examples to help you understand and troubleshoot such occurrences.
undefined variable:
when you try to use a variable that hasn't been defined in the current scope, a nameerror is raised.
typographical errors:
simple typos in variable or function names can lead to nameerror. python is case-sensitive, so make sure to use the correct casing.
scope issues:
if a variable is defined in a different scope (e.g., inside a function) and you try to access it outside that scope, a nameerror will occur.
output:
output:
output:
understanding nameerror is crucial for writing robust and error-free python code. by being mindful of variable scope, avoiding typographical errors, and ensuring proper variable definition, you can prevent nameerror-related issues in your programs. regularly testing and debugging your code will help you catch and resolve such

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