Automatic Logging

[Gregory Petrosyan]

My decorator bike:


import logging
import traceback

logging.basicConfig(level=logging.DEBUG,
                    format="%(asctime)s %(levelname)s:\n%(message)s\n",
                    filename="/tmp/py.log",
                    filemode='w')

def log(f):
    def new_f(*args, **kwds):
        try:
            indent = len("(in '%s')  %s(" % (f.__module__,
f.func_name))
            nice_args = [repr(a) for a in args]
            nice_args = (',\n'+' '*indent).join(nice_args)
            nice_kwds = [str(a) + ' = ' + repr(b) for a,b in
kwds.items()]
            if nice_kwds:
                nice_kwds[0] = ' '*indent + nice_kwds[0]
                nice_kwds = (',\n'+' '*indent).join(nice_kwds)
                nice_args = nice_args + ',\n' + nice_kwds
            else:
                nice_args = nice_args + ', {}'
            logging.info("(in '%s')  %s(%s)  starts" % \
                         (f.__module__, f.func_name, nice_args))
            result = f(*args, **kwds)
        except:

logging.error('\n'.join(traceback.format_exc().split('\n')[1:])[:-1])
            raise
        return result
    new_f.func_name = f.func_name
    return new_f