I find myself writing command line tools in Python where I wish to include "verbose" output to stdout.
I start with a helper function: def print_(obj, level=0): if _verbosity >= level: print obj And then I end up with functions or methods looking like this: def parrot(x) print_("precondition", level=2) do_something() print_("status is good...", level=1) print_("parrot is squawking strongly now", level=2) do_something_else() print_("squawk squawk squawk", level=3) do_more() print_("postcondition", level=1) return something That often means that my functions end up with more message printing code than actual code. The whole thing seems messy and hard to manage for all but the smallest scripts. Worst of all, sometimes the messages I wish to print may be expensive to compute, and I don't want to waste time computing them if they aren't going to be printed because the verbosity is too low. But nor do I wish to fill my code with this: if _verbosity >= 3: x = calculate_complicated_thing() print_(x, level=3) Is there a better way of doing this than the way I am going about it? -- Steven -- http://mail.python.org/mailman/listinfo/python-list