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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 push(*resources):
 """ Push translation source English files to Transifex. Arguments name specific resources to push. Otherwise, push all the source files. """

    cmd = 'tx push -s'
    if resources:
        for resource in resources:
            execute(cmd + ' -r {resource}'.format(resource=resource))
    else:
        execute(cmd)