preserve argspec when decorating?
python
Solution
The `decorator` module preserves them fine:
from decorator import decorator
@decorator
def dec(func, *a, **k):
return func()
@dec
def f(arg1, arg2, arg3=1):
return
import inspect
print inspect.getargspec(f)
ArgSpec(args=['arg1', 'arg2', 'arg3'], varargs=None, keywords=None, defaults=(1,))
You probably can get the same effect by manually copying some `__foo__` attributes from the function to the wrapper function, but anyway the decorator module demonstrates it's possible and maybe gives you a starting point.
Problem
Possible Duplicate: How can I programmatically change the argspec of a function in a python decorator? argspec is a great way to get arguments of a function, but it doesn't work when the function has been decorated: ``` def dec(func): @wraps(func) def wrapper(*a, **k) return func() return wrapper @dec def f(arg1, arg2, arg3=SOME_VALUE): return import inspect print inspect.argspec(f) ----------- ArgSpec(args=[], varargs='a', keywords='k', defaults=None) ``` Argspec should return `arg1`, `arg2`, `arg3`. I think I need to define `wrapper` differently as to not use `*a` and `**k`, but I don't know how.