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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_package_sources(self):
 """Make remote python packages available for local use."""

        # Checkout local modules
        for config in self.sources.get('local', []):
            self.fetch_local_package(config=config)
        # Checkout S3 repositories specified in config
        for config in self.sources.get('s3', []):
            self.fetch_s3_package(config=config)
        # Checkout git repositories specified in config
        for config in self.sources.get('git', []):
            self.fetch_git_package(config=config)