scriptine 0.2.1

功能

• 轻松创建命令。每个命令只是一个函数。
  • 自动选项分析
  • 自动帮助文本（--help）
• 日志处理（使用-v、--verbose和-q、--quiet处理）
• 在干燥模式下测试脚本。所有破坏性函数/方法都被包装并将 设置-n或--dry-run选项时不调用。
• 轻松执行其他shell脚本。
• 方便地处理文件和目录。

示例

下面是一个小示例脚本：

import scriptine

def example_command(name, countdown=False, repeat=10):
    """Show how scriptine works."""
    if countdown:
        for i in range(repeat, 0, -1):
            print i,
    print 'Hello, %s!' % name

if __name__ == '__main__':
    scriptine.run()

使用我们的小脚本：

% python test.py
Usage: test.py command [options]

Options:
  -h, --help  show this help message and exit

Commands:
  example  Show how scriptine works.
% python test.py example Pete
Hello, Pete!
% python test.py example Pete --countdown --repeat 5
5 4 3 2 1 Hello, Pete!

一个更复杂的例子：

from scriptine import run, path, log
from scriptine.shell import call

def to_png_command(dirname, outdir='out', extension='jpeg'):
    """
    Convert all files with extension in dirname to .png.
    Only convert if result does not exists or is older.

    :param dirname: where to search for images
    :param outdir: where to store the results
    :param extension: file extension to convert
    """
    outdir = path(outdir)
    if not outdir.exists(): outdir.makedirs()
    log.mark('converting %s/*.%s to %s/*.png', dirname, extension, outdir)
    for f in path(dirname).files('*.'+extension):
        outfile = outdir / f.namebase + '.png'
        if not outfile.exists() or f.newer(outfile):
            call(['convert', f, outfile])

if __name__ == '__main__':
    run()

帮助文本：

% python convert.py to-png  --help
Usage: test.py to-png [options] dirname

 Convert all files with extension in dirname to .png. Only
convert if result does not exists or is older.

Required arguments:
dirname: where to search for images

Options:
  -h, --help        show this help message and exit
  --outdir=out      where to store the results
  --extension=jpeg  file extension to convert
  -n, --dry-run     don't actually do anything
  -v, --verbose     be more verbose
  -q, --quiet       be more silent

结果是：

% python convert.py to-png ~/images/ --extension gif
---> converting /Users/olt/images/*.gif to out/*.png
% python convert.py to-png ~/images/ --extension gif -v
---> converting /Users/olt/images/*.gif to out/*.png
INFO: call ['convert', '/Users/olt/images/foo.gif', 'out/foo.png']
INFO: call ['convert', '/Users/olt/images/bar.gif', 'out/foo.png']