TypeError: unsupported operand type(s)
The error message: TypeError: unsupported operand type(s) for X: ‘type1’ and ‘type2’ occurs when you try to perform an operation between incompatible data types. 1. Causes and Solutions Cause 1:….
Tag: Python
KeyError: accessing a non-existent dictionary key” in Python
The error message: KeyError: ‘some_key’ occurs when you try to access a key in a dictionary that does not exist. 1. Causes and Solutions Cause 1: Accessing a Missing Key….
ImportError: cannot import name ‘xyz’
The error message: ImportError: cannot import name ‘xyz’ from ‘module_name’ occurs when Python fails to import a specific function, class, or variable from a module. 1. Causes and Solutions Cause….
ModuleNotFoundError: No module named ‘xyz’
The error message: ModuleNotFoundError: No module named ‘xyz’ occurs when Python cannot find the module xyz because: 1. Causes and Solutions Cause 1: The Module is Not Installed If the….
AttributeError: module ‘math’ has no attribute ‘sine’
The error message: AttributeError: module ‘math’ has no attribute ‘sine’ occurs when you try to access an attribute (function, variable, or object) that does not exist in the math module…..
UnboundLocalError: local variable referenced before assignment
The error message: UnboundLocalError: local variable ‘variable_name’ referenced before assignment occurs when you try to use a local variable inside a function before it has been assigned a value. 1…..
NameError: function is not defined
The error message: NameError: name ‘function_name’ is not defined occurs when Python cannot recognize a function because it has not been defined or is used incorrectly. 1. Causes and Solutions….
NameError: name ‘self’ is not defined
In Python, the error message: NameError: name ‘self’ is not defined occurs when you try to use self inside a class method, but Python does not recognize it. This usually….
NameError: cannot access local variable before assignment
In Python, the error message: NameError: cannot access local variable ‘x’ before assignment occurs when you try to reference a local variable before assigning it a value inside a function…..
NameError: global name ‘x’ is not defined
In Python, the error message: NameError: global name ‘x’ is not defined occurs when a variable is referenced globally, but Python does not recognize it because it has not been….