setState is not a function
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NameError: name ‘X’ is not defined
How to Fix NameError: name 'X' is not defined
Introduction:
The “NameError: name ‘X’ is not defined” occurs in Python when the interpreter encounters a variable or function name that hasn’t been declared or is out of scope. This error typically results from typos, using a variable before it’s defined, or accessing a variable in the wrong scope. Identifying the cause is essential for debugging and ensuring proper variable definitions.
Common Causes of NameError in Python
The Problem:
A NameError occurs when you try to use a variable or function that hasn’t been defined yet or is out of scope:
print(age) # NameError: name ‘age’ is not defined
The Solution:
Ensure that the variable or function is defined before you use it:
age = 25
print(age) # Output: 25
If you’re dealing with scoping issues inside functions, ensure variables are passed correctly as parameters.
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