簡介
Click 官方文檔
同 argparse 模塊相比陆蟆，更直觀，更直觀惋增，并且支持 nesting commands
類似于 git 那種叠殷，除了這個特性支持的比較好，沒覺得簡潔到哪里去⊙﹏⊙
Click is a Python package for creating beautiful command line interfaces in a composable way with as little code as necessary. It’s the “Command Line Interface Creation Kit”. It’s highly configurable but comes with sensible defaults out of the box.
It aims to make the process of writing command line tools quick and fun while also preventing any frustration caused by the inability to implement an intended CLI API.
Click in three points:
- arbitrary nesting of commands
- automatic help page generation
- supports lazy loading of subcommands at runtime
模塊的使用
-h參數(shù)的支持（同@click.group通用）
CONTEXT_SETTINGS = dict(help_option_names=['-h', '--help'])
@click.command(context_settings=CONTEXT_SETTINGS)
def cli():
pass
添加參數(shù)
argument 和 option的區(qū)別
click supports two types of parameters for scripts: options and arguments. There is generally some confusion among authors of command line scripts of when to use which, so here is a quick overview of the differences. As its name indicates, an option is optional. While arguments can be optional within reason, they are much more restricted in how optional they can be.
To help you decide between options and arguments, the recommendation is to use arguments exclusively for things like going to subcommands or input filenames / URLs, and have everything else be an option instead.
添加argument（@click.argument）
# 我是真心不喜歡這種诈皿，沒有辦法添加help~限制又多
@click.argument('filename',
type=click.File('r'))
添加option（@click.option）
@click.option('-f', '-fasta', 'file_name',
type=click.File('r'),
required=True,
help=u'The fasta file input.')
添加密碼參數(shù)
# 如果輸入 -p 則傳入其后的參數(shù)
# 如果沒有輸入 -p林束，則提示輸入
@click.option('-p', '--password',
prompt=True, hide_input=True,
help='The password for email')
高亮顯示
click.secho(
'**** The failed files are stored at {} ****'.format(file_failed),
fg='red')
暫時到這里
