bpo-22057: Clarify eval() documentation (GH-8812)
If a globals dictionary without a '__builtins__' key is passed to eval(), a '__builtins__' key will be inserted to the dictionary: >>> eval("print('__builtins__' in globals())", {}) True (As a result of this behavior, we can use the builtins print() and globals() even if we passed a dictionary without a '__builtins__' key to eval().)
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