| @@ -420,8 +420,10 @@ are always available. They are listed here in alphabetical order. |
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The *expression* argument is parsed and evaluated as a Python expression |
| 421 |
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(technically speaking, a condition list) using the *globals* and *locals* |
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dictionaries as global and local namespace. If the *globals* dictionary is |
| 423 |
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- present and lacks '__builtins__', the current globals are copied into *globals* |
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- before *expression* is parsed. This means that *expression* normally has full |
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+ present and does not contain a value for the key ``__builtins__``, a |
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+ reference to the dictionary of the built-in module :mod:`builtins` is |
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+ inserted under that key before *expression* is parsed. |
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+ This means that *expression* normally has full |
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access to the standard :mod:`builtins` module and restricted environments are |
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propagated. If the *locals* dictionary is omitted it defaults to the *globals* |
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dictionary. If both dictionaries are omitted, the expression is executed in the |