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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def is_authenticated(user):
 """Return whether or not a User is authenticated. Function provides compatibility following deprecation of method call to `is_authenticated()` in Django 2.0. This is *only* required to support Django < v1.10 (i.e. v1.9 and earlier), as `is_authenticated` was introduced as a property in v1.10.s """

    if not hasattr(user, 'is_authenticated'):
       return False
    if callable(user.is_authenticated):
        # Will be callable if django.version < 2.0, but is only necessary in
        # v1.9 and earlier due to change introduced in v1.10 making
        # `is_authenticated` a property instead of a callable.
        return user.is_authenticated()
    else:
        return user.is_authenticated