Expand Up @@ -465,12 +465,16 @@ are always available. They are listed here in alphabetical order. dictionaries as global and local namespace. If the *globals* dictionary is present and does not contain a value for the key ``__builtins__``, a reference to the dictionary of the built-in module :mod:`builtins` is inserted under that key before *expression* is parsed. This means that *expression* normally has full access to the standard :mod:`builtins` module and restricted environments are propagated. If the *locals* dictionary is omitted it defaults to the *globals* dictionary. If both dictionaries are omitted, the expression is executed in the environment where :func:`eval` is called. The return value is the result of inserted under that key before *expression* is parsed. This means that *expression* normally has full access to the standard :mod:`builtins` module and restricted environments are propagated. If the *locals* dictionary is omitted it defaults to the *globals* dictionary. If both dictionaries are omitted, the expression is executed with the *globals* and *locals* in the environment where :func:`eval` is called. Note, *eval()* does not have access to the :term:`nested scope`\s (non-locals) in the enclosing environment.
The return value is the result of the evaluated expression. Syntax errors are reported as exceptions. Example:
>>> x = 1 Expand Down