Mailman 3 September 2017 - Python-ideas

Extension of python/json syntax to support explicitly sets and ordered dict.
by Matteo Nastasi Sept. 7, 2017

Sept. 7, 2017

Hi all, few days ago I thought about a way to rapresent sets and ordered dicts using a json compatible syntax, these are my conclusions: A set could be defined as { item1, item2, item3[...] } with {,} as an empty set An ordered dict could be defined as [ item1: value1, item2: value2 ... ] with [:] ase an empty odered dict It could be used inside python code or to serialize python structures in a json-like format (pyson maybe ?). What do you think about ? Kind regards, Matteo. --… [View More]

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Add os.usable_cpu_count()
by Giampaolo Rodola' Sept. 5, 2017

Sept. 5, 2017

Recently os.cpu_count() on Windows has been fixed in order to take process groups into account and return the number of all available CPUs: http://bugs.python.org/issue30581 This made me realize that os.cpu_count() does not return the number of *usable* CPUs, which could possibly represent a better default value for things like multiprocessing and process pools. It is currently possible to retrieve this info on UNIX with len(os.sched_getaffinity(0)) which takes CPU affinity and (I think) Linux … [View More]

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tarfile.extractall progress
by Tarek Ziadé Sept. 3, 2017

Sept. 3, 2017

Hey, For large archives, I want to display a progress bar while the archive is being extracted with: https://docs.python.org/3/library/tarfile.html#tarfile.TarFile.extractall I could write my own version of extractall() to do this, or maybe we could introduce a callback option that gets called everytime .extract() is called in extractall() The callback can receive the tarinfo object and where it's being extracted. This is enough to plug a progress bar and avoid reinventing .extractall() I … [View More]

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