Python命令模塊argparse學習筆記(一)
阿新 • • 發佈:2018-01-22
efault desc bubuko mut 執行 nbsp () 技術分享 res
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)