invalid-index-returned.md

Pattern: __index__ does not return integer

Issue: -

Description

Used when an __index__ method returns something which is not an integer.

Example of incorrect code:

class BadIndex(object):
    """ __index__ returns a dict """

    def __index__(self):  # [invalid-index-returned]
        return {'1': '1'}

Example of correct code:

class GoodIndex(object):
    """__index__ returns <type 'int'>"""

    def __index__(self):
        return 1