def repository_url(package_json):
    try:
        return package_json['repository']['url']
    except KeyError:
        return None
Executes a SQL statement with fetching one row from result.
dataset/ETHPy150Open zsck/npm-to-git/n2g.py/repository_url--crossover with--dataset/ETHPy150Open Relrin/aiorest-ws/aiorest_ws/db/backends/sqlite3/managers.py/SQLiteManager.execute_sql_and_fetchone