Hi
I use optparse with callback action, my callback function return some
value, but optparse does not store this value, options.callbac k_dest
always is None.
How can I store callback function return value or callback option value
like store action do?
I modify optparse.py Option::take_ac tion def and add there:
value = self.callback(s elf, opt, value, parser, *args, **kwargs) or
value
setattr(values, dest, value)
as for STORE_ACTIONS. but I do not like to do it like this :/ Why
optparse does not do it, store return or option value, this way? 1 2864
Callbacks are functions called when an optparse.Option Parser() object
has a callback option defined (don't know how to say this less obvious
sounding...) (they are documented in http://docs.python.org/lib/optparse-...callbacks.html)
Example (based on an example in the documentation):
this script:
-#!/usr/bin/env python
-import optparse
-def record_foo_seen (option, opt_str, value, parser):
- print 'saw foo'
-
-parser = optparse.Option Parser()
-parser.add_opti on("--foo", action="callbac k",
callback=record _foo_seen)
-(options, args) = parser.parse_ar gs()
-
-print options, args
prints when executed with or without argument:
martin@ubuntu:~ $ ./test2.py --foo
saw foo
{} []
martin@ubuntu:~ $ ./test2.py
{} []
martin@ubuntu:~ $ This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: washu |
last post by:
Hi,
I'm was going through the module help located on
http://docs.python.org/lib/optparse-store-action.html and I tried
modifying it a tiny bit and things don't work. If someone could tell me
what I'm doing wrong, I'd appreciate it.
The script that works (based on the code on the webpage) is:
#!/usr/bin/env python
|
by: Eric O. Angell |
last post by:
Say I have
class Header:
def __init__(self):
self.foo = 0
# ... more fields
and I have some commandline options that can specify better values for things
in the header, such as foo. If I try the obvious (to me):
parser = optparse.OptionParser()
parser.add_option('--secret', type='string', dest='header', default=Header())
|
by: ashtonn |
last post by:
Hello,
How do i make an option passed through command line, using optparse
global. I need to import this value in another file.
This is what iam trying to do.
$python test.py -d ffffffffffff
i should be able to store 'ffffffffffff' as global so that i could
|
by: Steven W. Orr |
last post by:
I decided I could be more articulate. I hope this helps.
I'm writing a program that needs to process options. Due to the nature of
the program with its large number of commandline options, I would like to
write a callback to be set inside add_option.
Something like this:
parser.add_option("-b", action="callback", callback=optionhandlr, dest='b')
|
by: Robert Kern |
last post by:
Jeff Keasler wrote:
If you code it up with unit tests and documentation, it has a good chance. But
in the meantime, you can tell optparse to stop processing options using the
standard "--" marker. For example:
$ cat mycommand.py
import optparse
parser = optparse.OptionParser()
| |
by: wannymahoots |
last post by:
optparse seems to be escaping control characters that I pass as
arguments on the command line. Is this a bug? Am I missing
something? Can this be prevented, or worked around?
This behaviour doesn't occur with non-control characters.
For example, if this program (called test.py):
from optparse import OptionParser
parser = OptionParser()
parser.add_option("-d", dest="delimiter", action="store")
|
by: James |
last post by:
Hi,
I would like to know your thoughts on a proposed change to optparse
that I have planned. It is possible to add default values to multiple
options using the set_defaults. However, when adding descriptions to
options the developer has to specify it in each add_option() call.
This results in unreadable code such as:
parser.add_option('-q', '--quiet' , action="store_false",
dest='verbose',
|
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last post by:
Hi,
I get following warning with a python script:
optparse.py:668: FutureWarning: %u/%o/%x/%X of negative int will
return a signed string in Python 2.4 and up
my code:
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