__getattr__ for global namespace?

[Harold Fellermann]

Hi,

I am writing an application that initializes the global namespace, and
afterwards, leaves the user with the python prompt. Now, I want to
catch NameErrors in user input like e.g.
Traceback (most recent call last):
File "<stdin>", line 1, in ?
NameError: name 'some_name' is not defined

For classes, there are the __getattr__ and __getattribute__ functions.
I wonder if there is some related function for (failed) global
attribute
lookup that is invoked with name as its argument instead.

I consulted the docs, but could not find anything. Any ideas?

- harold -

 

[Bruno Desthuilliers]

Harold Fellermann a écrit :

Hi,

I am writing an application that initializes the global namespace, and
afterwards, leaves the user with the python prompt. Now, I want to
catch NameErrors in user input like e.g.



Traceback (most recent call last):
File "<stdin>", line 1, in ?
NameError: name 'some_name' is not defined

For classes, there are the __getattr__ and __getattribute__ functions.
I wonder if there is some related function for (failed) global
attribute
lookup that is invoked with name as its argument instead.

I consulted the docs, but could not find anything. Any ideas?

http://docs.python.org/lib/module-sys.html

"""
excepthook( type, value, traceback)
This function prints out a given traceback and exception to sys.stderr.

When an exception is raised and uncaught, the interpreter calls
sys.excepthook with three arguments, the exception class, exception
instance, and a traceback object. In an interactive session this happens
just before control is returned to the prompt; in a Python program this
happens just before the program exits. The handling of such top-level
exceptions can be customized by assigning another three-argument
function to sys.excepthook.
"""
.... print "got ", type, value, tb
....
....got exceptions.NameError name 'toto' is not defined <traceback object
at 0x40416694>
HTH

 

[Harold Fellermann]

Great!

sys.excepthook() is exactly what I was looking for. Thank you.