argsparse -git.py

'''import sys
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("method",type=str,help="Method")
parser.add_argument("--a",type=int,default=5,help="operator A")
parser.add_argument("--b",type=int,default=6,help="operator B")
args=parser.parse_args()
print(args.a*args.b)'''

import os
import argparse
from git.cmd import Git

def cli():
    """
    git 命名程序入口
    """
    parser = argparse.ArgumentParser(prog='git')
    subparsers = parser.add_subparsers(
        title='These are common Git commands used in various situations',
        metavar='command')

    # status
    status_parser = subparsers.add_parser(
        'status',
        help='Show the working tree status')
    status_parser.set_defaults(handle=handle_status)

    # add
    add_parser = subparsers.add_parser(
        'add',
        help='Add file contents to the index')
    add_parser.add_argument(
        'pathspec',
        help='Files to add content from',
        nargs='*')
    add_parser.set_defaults(handle=handle_add)

    # commit
    commit_parser = subparsers.add_parser(
        'commit',
        help='Record changes to the repository')
    commit_parser.add_argument(
        '--message', '-m',
        help='Use the given <msg> as the commit message',
        metavar='msg',
        required=True)
    commit_parser.set_defaults(handle=handle_commit)


    git = Git(os.getcwd())
    args = parser.parse_args()
    if hasattr(args, 'handle'):
        args.handle(git, args)
    else:
        parser.print_help()

def handle_status(git, args):
        """
        处理 status 命令
        """
        cmd = ['git', 'status']
        output = git.execute(cmd)
        print(output)

def handle_add(git, args):
        """
        处理 add 命令
        """
        cmd = ['git', 'add']
        output = git.execute(cmd)
        print(output)


def handle_commit(git, args):
    """
    处理 -m <msg> 命令
    """
    cmd = ['git', 'commit', '-m', args.message]
    output = git.execute(cmd)
    print(output)