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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 make_project(self, executable, target):
 """Build the project and verify the executable exists."""

        command = 'make -f ../Makefile -C {0} {1}'.format(SRC_PATH, target)
        pipe = Popen(command, shell=True, stdout=PIPE, stderr=STDOUT,
                     env=CHILD_ENV)
        output = pipe.communicate()[0]
        if pipe.returncode != 0:
            raise MakeFailed(output)
        if not os.path.isfile(os.path.join(SRC_PATH, executable)):
            raise NonexistentExecutable(output)
        return output