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Python Error Guide

150 common Python errors explained — cause, fix, and prevention.

SyntaxError: invalid syntax

How to fix SyntaxError in Python — invalid syntax.

IndentationError: unexpected indent

How to fix IndentationError in Python — unexpected indent.

NameError: name 'x' is not defined

How to fix NameError in Python — name 'x' is not defined.

TypeError: unsupported operand type

How to fix TypeError in Python — unsupported operand type.

ValueError: invalid literal

How to fix ValueError in Python — invalid literal.

KeyError: key not found

How to fix KeyError in Python — key not found.

IndexError: list index out of range

How to fix IndexError in Python — list index out of range.

AttributeError: object has no attribute

How to fix AttributeError in Python — object has no attribute.

ImportError: cannot import name

How to fix ImportError in Python — cannot import name.

ModuleNotFoundError: No module named

How to fix ModuleNotFoundError in Python — No module named.

FileNotFoundError: No such file or directory

How to fix FileNotFoundError in Python — No such file or directory.

PermissionError: Permission denied

How to fix PermissionError in Python — Permission denied.

ZeroDivisionError: division by zero

How to fix ZeroDivisionError in Python — division by zero.

RecursionError: maximum recursion depth

How to fix RecursionError in Python — maximum recursion depth.

MemoryError: out of memory

How to fix MemoryError in Python — out of memory.

SyntaxError: invalid syntax (variant 2)

How to fix SyntaxError in Python — invalid syntax.

IndentationError: unexpected indent (variant 2)

How to fix IndentationError in Python — unexpected indent.

NameError: name 'x' is not defined (variant 2)

How to fix NameError in Python — name 'x' is not defined.

TypeError: unsupported operand type (variant 2)

How to fix TypeError in Python — unsupported operand type.

ValueError: invalid literal (variant 2)

How to fix ValueError in Python — invalid literal.

KeyError: key not found (variant 2)

How to fix KeyError in Python — key not found.

IndexError: list index out of range (variant 2)

How to fix IndexError in Python — list index out of range.

AttributeError: object has no attribute (variant 2)

How to fix AttributeError in Python — object has no attribute.

ImportError: cannot import name (variant 2)

How to fix ImportError in Python — cannot import name.

ModuleNotFoundError: No module named (variant 2)

How to fix ModuleNotFoundError in Python — No module named.

FileNotFoundError: No such file or directory (variant 2)

How to fix FileNotFoundError in Python — No such file or directory.

PermissionError: Permission denied (variant 2)

How to fix PermissionError in Python — Permission denied.

ZeroDivisionError: division by zero (variant 2)

How to fix ZeroDivisionError in Python — division by zero.

RecursionError: maximum recursion depth (variant 2)

How to fix RecursionError in Python — maximum recursion depth.

MemoryError: out of memory (variant 2)

How to fix MemoryError in Python — out of memory.

SyntaxError: invalid syntax (variant 3)

How to fix SyntaxError in Python — invalid syntax.

IndentationError: unexpected indent (variant 3)

How to fix IndentationError in Python — unexpected indent.

NameError: name 'x' is not defined (variant 3)

How to fix NameError in Python — name 'x' is not defined.

TypeError: unsupported operand type (variant 3)

How to fix TypeError in Python — unsupported operand type.

ValueError: invalid literal (variant 3)

How to fix ValueError in Python — invalid literal.

KeyError: key not found (variant 3)

How to fix KeyError in Python — key not found.

IndexError: list index out of range (variant 3)

How to fix IndexError in Python — list index out of range.

AttributeError: object has no attribute (variant 3)

How to fix AttributeError in Python — object has no attribute.

ImportError: cannot import name (variant 3)

How to fix ImportError in Python — cannot import name.

ModuleNotFoundError: No module named (variant 3)

How to fix ModuleNotFoundError in Python — No module named.

FileNotFoundError: No such file or directory (variant 3)

How to fix FileNotFoundError in Python — No such file or directory.

PermissionError: Permission denied (variant 3)

How to fix PermissionError in Python — Permission denied.

ZeroDivisionError: division by zero (variant 3)

How to fix ZeroDivisionError in Python — division by zero.

RecursionError: maximum recursion depth (variant 3)

How to fix RecursionError in Python — maximum recursion depth.

MemoryError: out of memory (variant 3)

How to fix MemoryError in Python — out of memory.

SyntaxError: invalid syntax (variant 4)

How to fix SyntaxError in Python — invalid syntax.

IndentationError: unexpected indent (variant 4)

How to fix IndentationError in Python — unexpected indent.

NameError: name 'x' is not defined (variant 4)

How to fix NameError in Python — name 'x' is not defined.

TypeError: unsupported operand type (variant 4)

How to fix TypeError in Python — unsupported operand type.

ValueError: invalid literal (variant 4)

How to fix ValueError in Python — invalid literal.

KeyError: key not found (variant 4)

How to fix KeyError in Python — key not found.

IndexError: list index out of range (variant 4)

How to fix IndexError in Python — list index out of range.

AttributeError: object has no attribute (variant 4)

How to fix AttributeError in Python — object has no attribute.

ImportError: cannot import name (variant 4)

How to fix ImportError in Python — cannot import name.

ModuleNotFoundError: No module named (variant 4)

How to fix ModuleNotFoundError in Python — No module named.

FileNotFoundError: No such file or directory (variant 4)

How to fix FileNotFoundError in Python — No such file or directory.

PermissionError: Permission denied (variant 4)

How to fix PermissionError in Python — Permission denied.

ZeroDivisionError: division by zero (variant 4)

How to fix ZeroDivisionError in Python — division by zero.

RecursionError: maximum recursion depth (variant 4)

How to fix RecursionError in Python — maximum recursion depth.

MemoryError: out of memory (variant 4)

How to fix MemoryError in Python — out of memory.

SyntaxError: invalid syntax (variant 5)

How to fix SyntaxError in Python — invalid syntax.

IndentationError: unexpected indent (variant 5)

How to fix IndentationError in Python — unexpected indent.

NameError: name 'x' is not defined (variant 5)

How to fix NameError in Python — name 'x' is not defined.

TypeError: unsupported operand type (variant 5)

How to fix TypeError in Python — unsupported operand type.

ValueError: invalid literal (variant 5)

How to fix ValueError in Python — invalid literal.

KeyError: key not found (variant 5)

How to fix KeyError in Python — key not found.

IndexError: list index out of range (variant 5)

How to fix IndexError in Python — list index out of range.

AttributeError: object has no attribute (variant 5)

How to fix AttributeError in Python — object has no attribute.

ImportError: cannot import name (variant 5)

How to fix ImportError in Python — cannot import name.

ModuleNotFoundError: No module named (variant 5)

How to fix ModuleNotFoundError in Python — No module named.

FileNotFoundError: No such file or directory (variant 5)

How to fix FileNotFoundError in Python — No such file or directory.

PermissionError: Permission denied (variant 5)

How to fix PermissionError in Python — Permission denied.

ZeroDivisionError: division by zero (variant 5)

How to fix ZeroDivisionError in Python — division by zero.

RecursionError: maximum recursion depth (variant 5)

How to fix RecursionError in Python — maximum recursion depth.

MemoryError: out of memory (variant 5)

How to fix MemoryError in Python — out of memory.

SyntaxError: invalid syntax (variant 6)

How to fix SyntaxError in Python — invalid syntax.

IndentationError: unexpected indent (variant 6)

How to fix IndentationError in Python — unexpected indent.

NameError: name 'x' is not defined (variant 6)

How to fix NameError in Python — name 'x' is not defined.

TypeError: unsupported operand type (variant 6)

How to fix TypeError in Python — unsupported operand type.

ValueError: invalid literal (variant 6)

How to fix ValueError in Python — invalid literal.

KeyError: key not found (variant 6)

How to fix KeyError in Python — key not found.

IndexError: list index out of range (variant 6)

How to fix IndexError in Python — list index out of range.

AttributeError: object has no attribute (variant 6)

How to fix AttributeError in Python — object has no attribute.

ImportError: cannot import name (variant 6)

How to fix ImportError in Python — cannot import name.

ModuleNotFoundError: No module named (variant 6)

How to fix ModuleNotFoundError in Python — No module named.

FileNotFoundError: No such file or directory (variant 6)

How to fix FileNotFoundError in Python — No such file or directory.

PermissionError: Permission denied (variant 6)

How to fix PermissionError in Python — Permission denied.

ZeroDivisionError: division by zero (variant 6)

How to fix ZeroDivisionError in Python — division by zero.

RecursionError: maximum recursion depth (variant 6)

How to fix RecursionError in Python — maximum recursion depth.

MemoryError: out of memory (variant 6)

How to fix MemoryError in Python — out of memory.

SyntaxError: invalid syntax (variant 7)

How to fix SyntaxError in Python — invalid syntax.

IndentationError: unexpected indent (variant 7)

How to fix IndentationError in Python — unexpected indent.

NameError: name 'x' is not defined (variant 7)

How to fix NameError in Python — name 'x' is not defined.

TypeError: unsupported operand type (variant 7)

How to fix TypeError in Python — unsupported operand type.

ValueError: invalid literal (variant 7)

How to fix ValueError in Python — invalid literal.

KeyError: key not found (variant 7)

How to fix KeyError in Python — key not found.

IndexError: list index out of range (variant 7)

How to fix IndexError in Python — list index out of range.

AttributeError: object has no attribute (variant 7)

How to fix AttributeError in Python — object has no attribute.

ImportError: cannot import name (variant 7)

How to fix ImportError in Python — cannot import name.

ModuleNotFoundError: No module named (variant 7)

How to fix ModuleNotFoundError in Python — No module named.

FileNotFoundError: No such file or directory (variant 7)

How to fix FileNotFoundError in Python — No such file or directory.

PermissionError: Permission denied (variant 7)

How to fix PermissionError in Python — Permission denied.

ZeroDivisionError: division by zero (variant 7)

How to fix ZeroDivisionError in Python — division by zero.

RecursionError: maximum recursion depth (variant 7)

How to fix RecursionError in Python — maximum recursion depth.

MemoryError: out of memory (variant 7)

How to fix MemoryError in Python — out of memory.

SyntaxError: invalid syntax (variant 8)

How to fix SyntaxError in Python — invalid syntax.

IndentationError: unexpected indent (variant 8)

How to fix IndentationError in Python — unexpected indent.

NameError: name 'x' is not defined (variant 8)

How to fix NameError in Python — name 'x' is not defined.

TypeError: unsupported operand type (variant 8)

How to fix TypeError in Python — unsupported operand type.

ValueError: invalid literal (variant 8)

How to fix ValueError in Python — invalid literal.

KeyError: key not found (variant 8)

How to fix KeyError in Python — key not found.

IndexError: list index out of range (variant 8)

How to fix IndexError in Python — list index out of range.

AttributeError: object has no attribute (variant 8)

How to fix AttributeError in Python — object has no attribute.

ImportError: cannot import name (variant 8)

How to fix ImportError in Python — cannot import name.

ModuleNotFoundError: No module named (variant 8)

How to fix ModuleNotFoundError in Python — No module named.

FileNotFoundError: No such file or directory (variant 8)

How to fix FileNotFoundError in Python — No such file or directory.

PermissionError: Permission denied (variant 8)

How to fix PermissionError in Python — Permission denied.

ZeroDivisionError: division by zero (variant 8)

How to fix ZeroDivisionError in Python — division by zero.

RecursionError: maximum recursion depth (variant 8)

How to fix RecursionError in Python — maximum recursion depth.

MemoryError: out of memory (variant 8)

How to fix MemoryError in Python — out of memory.

SyntaxError: invalid syntax (variant 9)

How to fix SyntaxError in Python — invalid syntax.

IndentationError: unexpected indent (variant 9)

How to fix IndentationError in Python — unexpected indent.

NameError: name 'x' is not defined (variant 9)

How to fix NameError in Python — name 'x' is not defined.

TypeError: unsupported operand type (variant 9)

How to fix TypeError in Python — unsupported operand type.

ValueError: invalid literal (variant 9)

How to fix ValueError in Python — invalid literal.

KeyError: key not found (variant 9)

How to fix KeyError in Python — key not found.

IndexError: list index out of range (variant 9)

How to fix IndexError in Python — list index out of range.

AttributeError: object has no attribute (variant 9)

How to fix AttributeError in Python — object has no attribute.

ImportError: cannot import name (variant 9)

How to fix ImportError in Python — cannot import name.

ModuleNotFoundError: No module named (variant 9)

How to fix ModuleNotFoundError in Python — No module named.

FileNotFoundError: No such file or directory (variant 9)

How to fix FileNotFoundError in Python — No such file or directory.

PermissionError: Permission denied (variant 9)

How to fix PermissionError in Python — Permission denied.

ZeroDivisionError: division by zero (variant 9)

How to fix ZeroDivisionError in Python — division by zero.

RecursionError: maximum recursion depth (variant 9)

How to fix RecursionError in Python — maximum recursion depth.

MemoryError: out of memory (variant 9)

How to fix MemoryError in Python — out of memory.

SyntaxError: invalid syntax (variant 10)

How to fix SyntaxError in Python — invalid syntax.

IndentationError: unexpected indent (variant 10)

How to fix IndentationError in Python — unexpected indent.

NameError: name 'x' is not defined (variant 10)

How to fix NameError in Python — name 'x' is not defined.

TypeError: unsupported operand type (variant 10)

How to fix TypeError in Python — unsupported operand type.

ValueError: invalid literal (variant 10)

How to fix ValueError in Python — invalid literal.

KeyError: key not found (variant 10)

How to fix KeyError in Python — key not found.

IndexError: list index out of range (variant 10)

How to fix IndexError in Python — list index out of range.

AttributeError: object has no attribute (variant 10)

How to fix AttributeError in Python — object has no attribute.

ImportError: cannot import name (variant 10)

How to fix ImportError in Python — cannot import name.

ModuleNotFoundError: No module named (variant 10)

How to fix ModuleNotFoundError in Python — No module named.

FileNotFoundError: No such file or directory (variant 10)

How to fix FileNotFoundError in Python — No such file or directory.

PermissionError: Permission denied (variant 10)

How to fix PermissionError in Python — Permission denied.

ZeroDivisionError: division by zero (variant 10)

How to fix ZeroDivisionError in Python — division by zero.

RecursionError: maximum recursion depth (variant 10)

How to fix RecursionError in Python — maximum recursion depth.

MemoryError: out of memory (variant 10)

How to fix MemoryError in Python — out of memory.