python: get the abstract syntax tree of imported function?
Question:
Let’s say I’ve already imported a python module in the interpreter. How can I get the abstract syntax tree of the imported module (and any functions and classes within it) within the interpreter? I don’t want to have to re-parse the source files. Thanks!
Answers:
Maybe you find some inspiration in this recipe:
A function that outputs a human-readable version of a Python AST.
Python 2 option (as compiler is removed in Python 3): Use compiler combined with inspect (which, of course, still uses the source):
>>> import compiler, inspect
>>> import re # for testing
>>> compiler.parse(inspect.getsource(re))
Module('Support for regular expressions (RE). nnThis module provides ...
Python 3:
>>> import ast, inspect
>>> ast.parse(inspect.getsource(re))
<_ast.Module at 0x7fdcbd1ac550>
There doesn’t seem to be a way to get an AST except from source code. If you explain why you don’t want to re-parse the source files, maybe we can help with that.
Let’s say I’ve already imported a python module in the interpreter. How can I get the abstract syntax tree of the imported module (and any functions and classes within it) within the interpreter? I don’t want to have to re-parse the source files. Thanks!
Maybe you find some inspiration in this recipe:
A function that outputs a human-readable version of a Python AST.
Python 2 option (as compiler is removed in Python 3): Use compiler combined with inspect (which, of course, still uses the source):
>>> import compiler, inspect
>>> import re # for testing
>>> compiler.parse(inspect.getsource(re))
Module('Support for regular expressions (RE). nnThis module provides ...
Python 3:
>>> import ast, inspect
>>> ast.parse(inspect.getsource(re))
<_ast.Module at 0x7fdcbd1ac550>
There doesn’t seem to be a way to get an AST except from source code. If you explain why you don’t want to re-parse the source files, maybe we can help with that.