> Pyparsing is defining a grammer. I haven't used it, but I can see where it would be useful when you have many rules that need to be considered.
Ah, see, this is where I hesitate. If you've got that many rules to begin with, doesn't that mean you've quite reliant on strings for things that may be better suited for composition of objects, or a pre-defined schema for lists and the like? I'm eager to witness an example. On 7 May 2014 09:40, Stefan Andersson <[email protected]> wrote: > Thanks guys! > Lot's of information there! > > regards > stefan > > > > On Wed, May 7, 2014 at 9:38 AM, Justin Israel <[email protected]>wrote: > >> The re.compile() thing is a small optimization where you compile the >> pattern ahead of time so that it doesn't have to do it each time you reuse >> it. The re module actually caches the last 100 patterns anyways, so it only >> really matters if you have many regular expressions that you are using over >> and over again. >> >> >> On Wed, May 7, 2014 at 8:35 PM, Stefan Andersson <[email protected]>wrote: >> >>> Thanks! Though I can't get my head around those >>> >>> re.compile(r'\d+') >>> >>> >>> >>> >>> >>> On Wed, May 7, 2014 at 8:06 AM, Marcus Ottosson >>> <[email protected]>wrote: >>> >>>> Sorry, I completely missed the part of your questions containing the >>>> example. :) >>>> >>>> # 1. Get all string in a dict together with their version number >>>> pattern = re.compile(r'\d+') >>>> versions = {}for test in v: >>>> version = pattern.search(test).group() >>>> version = int(version) >>>> versions[version] = test >>>> # 2. Sort version numbers and fill up a new list of strings >>>> sorted_versions = []for version in sorted(versions): >>>> sorted_versions.append(versions[version]) >>>> print sorted_versions >>>> >>>> ['test_v1.ma', 'test_v2.ma' ...] >>>> >>>> >>>> >>>> On 7 May 2014 07:51, Marcus Ottosson <[email protected]> wrote: >>>> >>>>> You could do something like this: >>>>> >>>>> >>> version = re.search(r'v\d+.nk', 'my_nukeFile_v12.nk').group()>>> >>>>> >>> version'v12.nk' >>>>> >>>>> At this point, you are guaranteed to always have a ‘v’ infront, and >>>>> that it will always end with ‘.nk’. At which point you could >>>>> >>>>> >>> version = int(version[1:-3])12 >>>>> >>>>> >>>>> >>>>> On 7 May 2014 07:34, Stefan Andersson <[email protected]> wrote: >>>>> >>>>>> So here is a though. How would you guys go about to sort versioning >>>>>> that has no padding? For instance Nuke always adds v1,v2,v3 etc without >>>>>> padding. And some users are used to do that when versioning their files. >>>>>> I >>>>>> try and trap most of those things to add padding. But... there is always >>>>>> that case when you can't. >>>>>> >>>>>> v = ["test_v1.ma", "test_v2.ma","test_v11.ma","test_v8.ma"," >>>>>> test_v10.ma"] >>>>>> >>>>>> how would you sort and print the last version? In a clever way. Right >>>>>> now there is a lot of splitting and sorting for me to get it right. But >>>>>> it >>>>>> feels there would be a "smart" way with regex, but I can't get my head >>>>>> around how to use that. >>>>>> >>>>>> regards >>>>>> stefan >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> On Wed, May 7, 2014 at 6:42 AM, Marcus Ottosson < >>>>>> [email protected]> wrote: >>>>>> >>>>>>> Just reading up on Pyparsing so I could be off here, but I would >>>>>>> actually argue that if a codebase relies heavily enough on strings (for >>>>>>> identification?) that regex no longer cuts it, I would consider whether >>>>>>> or >>>>>>> not there is a better way of doing it, and not necessarily turn to >>>>>>> heavier >>>>>>> guns in parsing. >>>>>>> >>>>>>> Again, I could very well be misunderstanding. Does anyone have an >>>>>>> example of Pyparsing in action? >>>>>>> >>>>>>> >>>>>>> On 7 May 2014 00:12, Jeremy YeoKhoo <[email protected]> wrote: >>>>>>> >>>>>>>> Thanks so much Chad, yes I agree. Not many TDs are aware or >>>>>>>> understand the necessity of good program design and structure (me >>>>>>>> included!) and in this case naming convention! Ill have to have a look >>>>>>>> at >>>>>>>> that and apply what I can to my own set of tools that i am currently >>>>>>>> in the >>>>>>>> process of creating >>>>>>>> >>>>>>>> Thanks >>>>>>>> -Jeremy >>>>>>>> >>>>>>>> >>>>>>>> On Sunday, 4 May 2014 20:47:26 UTC+10, Jeremy YeoKhoo wrote: >>>>>>>> >>>>>>>>> Hey guys, >>>>>>>>> >>>>>>>>> This should be fairly easy for you guys who know regex. If I have >>>>>>>>> a string that I want to enable versioning, so say for an example I >>>>>>>>> want to >>>>>>>>> recognize a string if it contains ['v001', 'v002', etc...] >>>>>>>>> I have something like this... >>>>>>>>> >>>>>>>>> remp= re.search('[0-9]+', 'hello_v001') >>>>>>>>> print temp.group() >>>>>>>>> >>>>>>>>> but I dont want it to return when: >>>>>>>>> remp= re.search('[0-9]+', 'hello_001') >>>>>>>>> print temp.group() >>>>>>>>> >>>>>>>>> Thanks >>>>>>>>> -Jeremy >>>>>>>>> >>>>>>>>> -- >>>>>>>> You received this message because you are subscribed to the Google >>>>>>>> Groups "Python Programming for Autodesk Maya" group. >>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>> send an email to [email protected]. >>>>>>>> To view this discussion on the web visit >>>>>>>> https://groups.google.com/d/msgid/python_inside_maya/ba398c57-19f8-4096-8524-07f609f1496c%40googlegroups.com<https://groups.google.com/d/msgid/python_inside_maya/ba398c57-19f8-4096-8524-07f609f1496c%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>>> . >>>>>>>> >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> *Marcus Ottosson* >>>>>>> [email protected] >>>>>>> >>>>>>> -- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "Python Programming for Autodesk Maya" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to [email protected]. >>>>>>> To view this discussion on the web visit >>>>>>> https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOD-0rkPSh1QZrzntoLmk7Fawst3%3DGHWmT5w0Fo0yEgn5Q%40mail.gmail.com<https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOD-0rkPSh1QZrzntoLmk7Fawst3%3DGHWmT5w0Fo0yEgn5Q%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>>>>> . >>>>>>> >>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Stefan Andersson | Digital Janitor >>>>>> social media -> "sanders3d" >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "Python Programming for Autodesk Maya" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to [email protected]. >>>>>> To view this discussion on the web visit >>>>>> https://groups.google.com/d/msgid/python_inside_maya/CAKW24e29hZ%3DgrJndzhGxpw1j%2BEgVPc6Oi%2Bdcop5d_DMTwxtxCg%40mail.gmail.com<https://groups.google.com/d/msgid/python_inside_maya/CAKW24e29hZ%3DgrJndzhGxpw1j%2BEgVPc6Oi%2Bdcop5d_DMTwxtxCg%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>>>> . >>>>>> >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> *Marcus Ottosson* >>>>> [email protected] >>>>> >>>> >>>> >>>> >>>> -- >>>> *Marcus Ottosson* >>>> [email protected] >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Python Programming for Autodesk Maya" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOB1gRWVdmQW%3DpN83Th9tRfcgpquF135%2BnZw5uHf%3DFSN1g%40mail.gmail.com<https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOB1gRWVdmQW%3DpN83Th9tRfcgpquF135%2BnZw5uHf%3DFSN1g%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >>> >>> -- >>> Stefan Andersson | Digital Janitor >>> social media -> "sanders3d" >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Python Programming for Autodesk Maya" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/python_inside_maya/CAKW24e3iNZDGBFTweCyBR%3DfYTFugtM%2BPYf9ZidDuHDDWM4Q-dQ%40mail.gmail.com<https://groups.google.com/d/msgid/python_inside_maya/CAKW24e3iNZDGBFTweCyBR%3DfYTFugtM%2BPYf9ZidDuHDDWM4Q-dQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Python Programming for Autodesk Maya" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/python_inside_maya/CAPGFgA0h9_C7qLE6iy%3DLXtm9U%2BjCRpFEzupFn2zPEG-8FxjO3w%40mail.gmail.com<https://groups.google.com/d/msgid/python_inside_maya/CAPGFgA0h9_C7qLE6iy%3DLXtm9U%2BjCRpFEzupFn2zPEG-8FxjO3w%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Stefan Andersson | Digital Janitor > social media -> "sanders3d" > > -- > You received this message because you are subscribed to the Google Groups > "Python Programming for Autodesk Maya" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/python_inside_maya/CAKW24e2TOXcVLf38S8ShKUGsZhZkrE0EWhqyewvLDUjoCKyJ_A%40mail.gmail.com<https://groups.google.com/d/msgid/python_inside_maya/CAKW24e2TOXcVLf38S8ShKUGsZhZkrE0EWhqyewvLDUjoCKyJ_A%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- *Marcus Ottosson* [email protected] -- You received this message because you are subscribed to the Google Groups "Python Programming for Autodesk Maya" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOD%3Dnvg0WiedApoPYVUoNoc7s6H3sVRn0wSw33_QPA%3DHVg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
