|
1 |
| -argscript |
2 |
| -========= |
| 1 | +[argscript][] is a port of [werkzeug.script][ws] to [argparse][]. Argscript generates |
| 2 | +a an argparse command line parser from the function definitions of a script. |
| 3 | + |
| 4 | +> An action is a function in the same module starting with `action_` which takes |
| 5 | +a number of arguments where every argument has a default. The type of the |
| 6 | +default value specifies the type of the argument. Arguments can then be passed by using `--name=value` from the shell. [werkzeug.script][ws] |
3 | 7 |
|
4 |
| -Port of [werkzeug.script][ws] to [argparse][]. |
5 | 8 |
|
6 |
| -Since werkzeug.script is being deprecated, I've ported it to argparse. |
7 | 9 |
|
8 | 10 | Basic Usage is the same as werkzeug.script:
|
9 | 11 |
|
10 | 12 | #!/usr/bin/env python
|
11 | 13 | # -*- coding: utf-8 -*-
|
12 |
| - """Docstring for script""" |
| 14 | + """Docstring for test script""" |
13 | 15 |
|
14 | 16 | import argscript
|
15 | 17 |
|
16 | 18 | # actions go here
|
17 |
| - def action_foo(arg='test'): |
| 19 | + def action_foo(arg1='test'): |
18 | 20 | """doc for action foo
|
19 | 21 |
|
20 |
| - arg -- first argument |
| 22 | + arg1 -- first argument |
21 | 23 | """
|
22 |
| - pass |
| 24 | + print 'action_foo called with argument arg1: %s' % arg1 |
23 | 25 |
|
24 |
| - def action_lee(bar=4): |
| 26 | + def action_bar(msg='', times=1): |
25 | 27 | """doc for action bar
|
26 | 28 |
|
27 |
| - bar -- run with bar |
| 29 | + msg -- a message |
| 30 | + times -- number |
28 | 31 | """
|
29 |
| - pass |
| 32 | + print 'action_lee called with arguments msg: %s, times: %s' %(msg, times) |
| 33 | + |
30 | 34 |
|
31 | 35 | if __name__ == '__main__':
|
32 | 36 | argscript.run()
|
33 | 37 |
|
| 38 | +Now you can run the script with the `-h` parameter to show a basic help. The |
| 39 | +docstring from the `test.py` script is reused in the help message. |
| 40 | + |
| 41 | + $ ./test.py -h |
| 42 | + usage: test.py [-h] {foo,bar} ... |
| 43 | + |
| 44 | + Docstring for test script |
| 45 | + |
| 46 | + positional arguments: |
| 47 | + {foo,bar} |
| 48 | + |
| 49 | + optional arguments: |
| 50 | + -h, --help show this help message and exit |
| 51 | + |
| 52 | +To get the help message for a particular action call the script with the action |
| 53 | +name and the `-h` parameter: |
| 54 | + |
| 55 | + $ ./test.py bar -h |
| 56 | + usage: test.py bar [-h] [--msg MSG] [--times TIMES] |
| 57 | + |
| 58 | + doc for action bar |
| 59 | + |
| 60 | + optional arguments: |
| 61 | + -h, --help show this help message and exit |
| 62 | + --msg MSG a message |
| 63 | + --times TIMES number |
| 64 | + |
| 65 | +Again the function docstring is reuesed in the help message. If you specify |
| 66 | +a description for the arguments in the doc string (`variable -- doc`), they are |
| 67 | +reuesed too. |
| 68 | + |
| 69 | +Now you can run the script with the action name and the parameters, and the |
| 70 | +action function will be called with them. If you obmit a parameter, the default |
| 71 | +value will be used to call the function. |
| 72 | + |
| 73 | + $ ./test.py bar --msg='Hello World' --times=4 |
| 74 | + |
| 75 | + action_lee called with arguments msg: Hello World, times: 4 |
| 76 | + |
| 77 | + |
| 78 | +## Installation |
| 79 | + |
| 80 | +You can either install the development version from [github][argscript]: |
| 81 | + |
| 82 | + git clone [email protected]:hoffmann/argscript.git |
| 83 | + cd argscript |
| 84 | + sudo python setup.py install |
| 85 | + |
| 86 | + |
| 87 | +or install it from [pypi.python.org][pypi]: |
| 88 | + |
| 89 | + pip install argscript |
| 90 | + |
| 91 | + |
| 92 | + |
34 | 93 |
|
35 | 94 | [ws]: http://werkzeug.pocoo.org/docs/script/
|
36 | 95 | [argparse]: http://docs.python.org/library/argparse.html
|
| 96 | +[argscript]: https://github.com/hoffmann/argscript |
| 97 | +[pypi]: http://pypi.python.org/pypi/argscript/ |
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