The Python TypeError is an exception that occurs when the data type of an object in an operation is inappropriate. This can happen when an operation is performed on an object of an incorrect type, or it is not supported for the object. For example, if a string is attempted to be multiplied with an integer, a TypeError is generated. 

To avoid type errors in Python, the type of an object should be checked before performing an operation. This can help ensure that the object type is appropriate for the operation and if the operation is supported by the object. If the operation is unsupported by the type or if the type is inappropriate for the operation, a message can be displayed to pass the proper type.