首先是關於-h/--help參數的設置

description：位於help信息前，可用於描述help
prog：描述help信息中程序的名稱
epilog：位於help信息後
usage：描述程序的用途
add_help：默認為True，設為False後，就不能顯示help信息了，執行-h/--help將會報錯
conflict_handler：解決參數沖突
prefix_chars：參數前綴，默認為"-"
fromfile_prefix_chars：設置前綴字符，放在文件名之前，對文件裏的參數進行讀取和執行
argument_default：參數的全局默認值

description/epilog

# -*- coding:utf-8 -*-
__author__ = "MuT6 Sch01aR"

import argparse
parser = argparse.ArgumentParser(description="The Help Of Python")
parser.add_argument("-t","--thread",help="Thread Run",action="store_true")
args = parser.parse_args()
if args.thread:
    print(args)
else:
    print("Error")

執行參數-h

運行結果

prog/usage

# -*- coding:utf-8 -*-
__author__ = "MuT6 Sch01aR"

import argparse
parser = argparse.ArgumentParser(description="The Help Of Python",epilog="End Of Help",usage="Python Run Thread")
parser.add_argument("-t","--thread",help="Thread Run",action="store_true")
args = parser.parse_args()
if args.thread:
    print(args)
else:
    print("Error")

運行結果

默認的為

如果沒有設置prog和usage則顯示默認的，prog和usage都設置的話，顯示usage的

add_help

# -*- coding:utf-8 -*-
__author__ = "MuT6 Sch01aR"

import argparse
parser = argparse.ArgumentParser(description="The Help Of Python",epilog="End Of Help",add_help=False)
parser.add_argument("-t","--thread",help="Thread Run",action="store_true")
args = parser.parse_args()
if args.thread:
    print(args)
else:
    print("Error")

運行結果

conflict_handler

當有參數重復的時候，程序會報錯，把conflict_handler設置為resovle就可以解決

# -*- coding:utf-8 -*-
__author__ = "MuT6 Sch01aR"

import argparse
parser = argparse.ArgumentParser(description="The Help Of Python",epilog="End Of Help")
parser.add_argument("-t","--thread",help="Thread Run",action="store_true")
parser.add_argument("-t","--thread",help="Thread Run(2)",action="store_true")
args = parser.parse_args()
if args.thread:
    print(args)
else:
    print("Error")

運行，報錯

給argparse.ArgumentParser()添加conflict_handler="resolve"

# -*- coding:utf-8 -*-
__author__ = "MuT6 Sch01aR"

import argparse
parser = argparse.ArgumentParser(description="The Help Of Python",epilog="End Of Help",conflict_handler="resolve")
parser.add_argument("-t","--thread",help="Thread Run",action="store_true")
parser.add_argument("-t","--thread",help="Thread Run(2)",action="store_true")
args = parser.parse_args()
if args.thread:
    print(args)
else:
    print("Error")

運行結果

原先的-t/--thread參數被覆蓋

Python命令模塊argparse學習筆記(一)