软件命令化

我们使用click库将函数封装成命令。可以在命令行中，在任何路径下对于函数进行调用，方便开发和测试。

Using click

Click 的使用模式如下

import click, os, sys
CONTEXT_SETTINGS = dict(help_option_names=['-h', '--help'])

@click.group(context_settings=CONTEXT_SETTINGS)
@click.pass_context
def cli(ctx):
    pass

#define the commands ...
@cli.command(short_help="tools for CSV files, run 'baseq csv' for help")
@click.option('--subject', '-s', default='A Email', help='Subject')
@click.option('--message', '-m', default='The message', help='Message')
@click.option('--attches', '-a', multiple=True, default='', help='Message')
def email(subject, message, attches):
    from baseq.utils.email_send import Client
    print(subject, message, attches)
    Client().send_mail(subject, message, attches)

上面定义了一个发送email的命令，通过如下方式调用：

baseq email -s "Hello World." -m "Thanks for your help" -a infos.txt