pdb.py 文件源码

def help():
    for dirname in sys.path:
        fullname = os.path.join(dirname, 'pdb.doc')
        if os.path.exists(fullname):
            sts = os.system('${PAGER-more} '+fullname)
            if sts: print '*** Pager exit status:', sts
            break
    else:
        print 'Sorry, can\'t find the help file "pdb.doc"',
        print 'along the Python search path'