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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 _pass_variable(self):
 """Return enviroment variables """

        pass_var = []
        for var in os.environ.keys():
            expVAR = var.split("_")
            if expVAR[0] == self.prgnam.upper() and expVAR[1] != "PATH":
                pass_var.append("{0}={1}".format(expVAR[1], os.environ[var]))
        return pass_var