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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 authorization_header(oauth_params):
 """Return Authorization header"""

        authorization_headers = 'OAuth realm="",'
        authorization_headers += ','.join(['{0}="{1}"'.format(k, urllib.quote(str(v)))
            for k, v in oauth_params.items()])
        return authorization_headers