utils.py 文件源码

def update(self, property_name, source_code_str):
        """Update the given property with the given source code.

        This does not write the results to file immediately, rather, this updates an internal buffer with the
        updated source code. To write to file use :meth:`write_to_file`.

        Args:
            property_name (str): the property (attribute or function) to update
            source_code_str (str): the updated source code for the property
        """
        try:
            start, end = self._fine_property_definition(property_name)
            source_lines = self._source.split('\n')
            new_source = '\n'.join(source_lines[:start])
            new_source += '\n' + indent(dedent(source_code_str.strip()), '\t') + '\n'
            new_source += '\n'.join(source_lines[end:])
        except ValueError:
            new_source = self._source + '\n' + indent(dedent(source_code_str.strip()), '\t') + '\n'
        self._source = new_source.rstrip('\n').replace('\t', '    ')