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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 open(self, filename):
 """Open a file for analysis. Args: filename (str):
 Name of an executable file. """

        if filename:
            self.binary = BinaryFile(filename)
            self.text_section = self.binary.text_section

            self._load(arch_mode=self.binary.architecture_mode)