import os

if os.environ.get('COVERAGE_PROCESS_START'):

    try:

        import coverage

        import random

        # uuid is better, but not available in Python 2.4.

        covpath = os.path.join(os.environ['COVERAGE_DIR'],

                               'cov.%s' % random.randrange(0, 1000000000000))

        cov = coverage.coverage(data_file=covpath, auto_data=True)

        cov._warn_no_data = False

        cov._warn_unimported_source = False

        cov.start()

    except ImportError:

        pass