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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 sys_prefix(self):
 """ The prefix run inside the context of the environment :return: The python prefix inside the environment :rtype: :data:`sys.prefix` """


        command = [self.python, "-c" "import sys; print(sys.prefix)"]
        c = vistir.misc.run(command, return_object=True, block=True, nospin=True, write_to_stdout=False)
        sys_prefix = vistir.compat.Path(vistir.misc.to_text(c.out).strip()).as_posix()
        return sys_prefix