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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 get_contrib_features(project_root):
 """Get contributed features for a project at project_root For a project ``foo``, walks modules within the ``foo.features.contrib`` subpackage. A single object that is an instance of ``ballet.Feature`` is imported if present in each module. The resulting ``Feature`` objects are collected. Args: project_root (str, path-like):
 Path to project root Returns: List[ballet.Feature]: list of Feature objects """

    # TODO Project should require ModuleType
    project = Project(project_root)
    contrib = project._resolve('.features.contrib')
    return _get_contrib_features(contrib)