最近因工作需要使用Python寫個指令碼，用到了獲取命令列引數，這裡順便總結下做個筆記，下次用到過來瞅瞅就方便的多了

import sys
import getopt

def usage():
    print ("sys.argv[0]: '-a aa -b bb -c cc'")
    print ("sys.argv[0]: ' -h'")
    
def db_get_args():
    try:
        opts,args = getopt.getopt(sys.argv[1:], "ha:b:c:")
    except getopt.GetoptError,err:
        print str(err)
        usage()
        sys.exit(1)
    if len(opts) == 3:
        for op,value in opts:
            if(op == "-h"):
                usage()
                sys.exit(1)
            elif(op == "-a"):
                aa = value
            elif(op == "-b"):
                bb = value
            elif(op == "-c"):
                cc = value
            else:
                usage()
                sys.exit(1)
    else:
        usage()
        sys.exit(1)
    
    return aa,bb,cc

aa,bb,cc = db_get_args()
print aa,bb,cc
 

執行指令碼python getargs.py -a "hello" -b " world" -c "I'm comming"

則執行結果為

hello world I'm comming