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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 replace_variables(self, text):
 """Replace variable placeholders in `text` with values from the virtual env. The variables are: - {python-executable} Args: text: The text to do replacment int. Returns: The text after replacement. """

        variables = {
            'python-executable': str(self._venv_path / 'bin' / 'python')
        }
        return text.format(**variables)