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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 _parse_optimization(optimization):
    '''Turns an optimization of the form
        my_optim
        my_package.my_optim
        into the associated symbol'''
    splitted = optimization.split('.')
    if len(splitted) == 1:
        splitted = ['pythran', 'optimizations'] + splitted
    return reduce(getattr, splitted[1:], __import__(splitted[0]))