def _get_function(self, name, context):
snippet = self.config.data['autoinstall'].get(name)
if not snippet:
return None
code = 'def {}():\n{}'.format(name, textwrap.indent(snippet, ' '))
tree = ast.parse(code, filename=self.env.config_file)
ast.increment_lineno(tree, snippet.start_mark.line)
co = compile(tree, filename=self.env.config_file, mode='exec')
stage = {}
exec(co, context, stage)
return stage[name]
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