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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 determine_version(self, request, api_version=None):
 """Determines the appropriate version given the set api_version, the request header, and URL query params"""

        if api_version is False:
            api_version = None
            for version in self.versions:
                if version and "v{0}".format(version) in request.path:
                    api_version = version
                    break

        request_version = set()
        if api_version is not None:
            request_version.add(api_version)

        version_header = request.get_header("X-API-VERSION")
        if version_header:
            request_version.add(version_header)

        version_param = request.get_param('api_version')
        if version_param is not None:
            request_version.add(version_param)

        if len(request_version) > 1:
            raise ValueError('You are requesting conflicting versions')

        return next(iter(request_version or (None, )))