Yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/Querying ASTs.html
|
[[yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/AST Errors.html| |
[[yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/module-parser.html| |
[[yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/Converting ASTs.html| |
Python Library Reference |
[[yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/contents.html| |
|
[[yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/genindex.html| |
Next: 3.16.4 Exceptions and Error Up: 3.16 parser Previous: 3.16.2 Converting AST Objects
3.16.3 Queries on AST Objects
Two functions are provided which allow an application to determine if an AST was created as an expression or a suite. Neither of these functions can be used to determine if an AST was created from source code via expr() or suite() or from a parse tree via sequence2ast().
- isexpr (ast)
- When ast represents an
'eval'form, this function returns true, otherwise it returns false. This is useful, since code objects normally cannot be queried for this information using existing built-in functions. Note that the code objects created by compileast() cannot be queried like this either, and are identical to those created by the built-in compile() function.
- issuite (ast)
- This function mirrors isexpr() in that it reports whether an AST object represents an
'exec'form, commonly known as a ``suite.'' It is not safe to assume that this function is equivalent to "not isexpr(ast)", as additional syntactic fragments may be supported in the future.
|
[[yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/AST Errors.html| |
[[yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/module-parser.html| |
[[yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/Converting ASTs.html| |
Python Library Reference |
[[yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/contents.html| |
|
[[yurttas/PL/SL/python/docs/core-python-programming/doc/16/lib/genindex.html| |