TypeError is a built-in exception in Python that is raised when an operation or function is applied to an object of inappropriate type. This means that the data type of the object being used is not compatible with the operation or function being performed on it.
Some common scenarios in which TypeError occurs are:
- Trying to concatenate a string and a number
- Attempting to access an index of a non-indexable object, such as an integer or float
- Passing the wrong number of arguments to a function
- Using an unsupported operator on a data type, such as trying to use the
+operator on a set - Trying to modify an immutable object, such as a tuple or string
- Attempting to call a method on an object that doesn’t have that method
- Using an incorrect syntax for a function or method call
In general, TypeError occurs when there is a mismatch between the expected type of an object and the actual type of the object being used.
The following tutorials cover some of the common TypeErrors in Python and how to resolve them with the help of some examples.
- How to Fix – TypeError: can only concatenate str (not ‘int’) to str
- How to Fix – TypeError ‘float’ object is not subscriptable
- How to Fix – TypeError ‘set’ object is not subscriptable
- How to Fix – TypeError ‘int’ object is not subscriptable
- How to Fix – TypeError unhashable type ‘set’
- How to Fix – TypeError unhashable type ‘dict’
- How to Fix – TypeError can’t multiply sequence by non-int of type ‘list’
- How to Fix – TypeError: can’t multiply sequence by non-int of type ‘str’
- How to Fix – TypeError can’t multiply sequence by non-int of type ‘float’
- How to Fix – TypeError unhashable type ‘list’
- How to Fix – TypeError: string indices must be integers