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Python Errors

8 errors

Python runtime errors — SyntaxError, NameError, TypeError, IndentationError, and more.

8 / 8

  1. 1

    SyntaxError: invalid syntax

    Python can't parse your code — there's a missing colon, parenthesis, or wrong keyword somewhere on the reported line.

  2. 2

    NameError: name 'x' is not defined

    Python doesn't recognize the name you used — it was never assigned, imported, or defined in the current scope.

  3. 3

    TypeError: unsupported operand type(s)

    You used a value with an operator or function that doesn't accept that type — like adding a string to an integer.

  4. 4

    IndentationError: expected an indented block

    Python uses indentation to define code blocks — wrong, missing, or inconsistent indentation breaks the structure.

  5. 5

    IndexError: list index out of range

    You tried to access a list element at an index that is beyond the list's valid range (0 to `len(list) - 1`).

  6. 6

    KeyError: 'x'

    You tried to get a value from a dictionary using a key that isn't in the dictionary.

  7. 7

    ModuleNotFoundError: No module named 'x'

    Python can't find the module you're trying to import — it's not installed, not in the Python path, or the name is wrong.

  8. 8

    AttributeError: 'x' object has no attribute 'y'

    You tried to use a method or property on an object that doesn't have it — usually a typo or the wrong object type.

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