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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_text(filepath, to_replace, replacement):
 """ Replaces a string in a given file with another string :param file: the file in which the string has to be replaced :param to_replace: the string to be replaced in the file :param replacement: the string which replaces 'to_replace' in the file """

        with open(filepath) as file:
            s = file.read()
        s = s.replace(to_replace, replacement)
        with open(filepath, 'w') as file:
            file.write(s)