Python命令模組argparse學習筆記(一)

標籤：運行   衝突   argparse   學習   thread   圖片   重複   fromfile   desc   

首先是關於-h/--help參數的設定

description：位於help資訊前，可用於描述help
prog：描述help資訊中程式的名稱
epilog：位於help資訊後
usage：描述程式的用途
add_help：預設為True，設為False後，就不能顯示help資訊了，執行-h/--help將會報錯
conflict_handler：解決參數衝突
prefix_chars：參數首碼，預設為"-"
fromfile_prefix_chars：設定前置詞字元，放在檔案名稱之前，對檔案裡的參數進行讀取和執行
argument_default：參數的全域預設值

description/epilog

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

預設的為

如果沒有設定prog和usage則顯示預設的，prog和usage都設定的話，顯示usage的

add_help

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

當有參數重複的時候，程式會報錯，把conflict_handler設定為resovle就可以解決

# -*- coding:utf-8 -*-__author__ = "MuT6 Sch01aR"import argparseparser = 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 argparseparser = 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命令模組argparse學習筆記(一)