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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 run_activate_this(self):
 """Runs the environment's inline activation script"""

        if self.is_venv:
            activate_this = os.path.join(self.scripts_dir, "activate_this.py")
            if not os.path.isfile(activate_this):
                raise OSError("No such file: {0!s}".format(activate_this))
            with open(activate_this, "r") as f:
                code = compile(f.read(), activate_this, "exec")
                exec(code, dict(__file__=activate_this))