On Thu, 06 Nov 2008 03:27:53 -0800, gregory.lielens wrote: > Hi, > > I am using a small python file as an input file (defining constants, > parameters, input data, ...) for a python application. The input file is > simply read by an exec statement in a specific dictionary, and then the > application retrieve all the data it need from the dictionary...
Surely a better, more Pythonic, and *faster* way to accomplish the same thing is with import? > Everything is working nicely, but I'd like to have something a little > bit more robust regarding input file errors: now any error in the python > input script raise an exception and stop the execution. Which is the right thing to do. > What I am trying to do is to execute it "step-by-step", so that I can > capture the exception if one line (or multi-line statement) fails, print > a warning about the failure, and continue the execution fo the following > lines/statements. Of course, an error on one line can trigger errors in > the following lines, but it does not matter in the application I have in > mind, I'm curious what sort of application you have where it doesn't matter that programmatic statements are invalid. > the goal is to parse as much of the input script as possible, warn > about the errors, and check what's inside the dictionary after the exec. > One way to do it is to read the input script line per line, and exec > each line in turn. However, this is not convenient as it does not allow > multi-line statements, or basic control flow like if - else statements > or loops. So basically you want to create a Python interpreter you can stop and start which runs inside Python. Is that right? -- Steven -- http://mail.python.org/mailman/listinfo/python-list
