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Transforming Python expressions in a string literal using `ast.literal_eval`

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String literals containing valid Python expressions can be mapped to their expressions by using the built-in `ast.literal_eval` function

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Occasionally we may encounter Python expressions inside string literals, such as reading in code from a file or API. In these cases we can transform these strings into the underlying expressions using the ast.literal_eval function. literal_eval is a safer alternative to the eval function, and is preferable if the data source (i.e. string_with_list in our example) is not trusted. You can read more about the differences between literal_eval and eval in this Stack Overflow question.

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