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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 transform_using_this_method(original_sample):
 """ This function implements a log transformation on the data. """

    # Copy the original sample
    new_sample = original_sample.copy()
    new_data = new_sample.data

    # Our transformation goes here
    new_data['Y2-A'] = log(new_data['Y2-A'])
    new_data = new_data.dropna()  # Removes all NaN entries
    new_sample.data = new_data
    return new_sample