def select_first_items():
    x = [('A','x'), ('B','y'), ('C','z')]
    return [v[0] for v in x]
Get a URL for managing a new merchant
dataset/ETHPy150Open manahl/PythonTrainingExercises/Beginers/ListsTuples/solutions.py/select_first_items--crossover with--dataset/ETHPy150Open gocardless/gocardless-python/gocardless/client.py/Client.new_merchant_url