New submission from Yclept Nemo:
From: https://docs.python.org/dev/library/subprocess.html#popen-constructor
"..., an existing file descriptor (a positive integer), an existing file
object, and None."
It should be made clear that the file object must be backed by an operating
s
New submission from Yclept Nemo:
Just like InteractiveInterpreter.write and the actual python interpreter, the
console's prompt should be written to stderr. Something like:
self.write(prompt)
return input()
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components: Library (Lib)
messages: 254575
nosy: Yclept.Nemo
pri
Yclept Nemo added the comment:
Well that won't work. Example:
import argparse
class TestAction(argparse.Action):
def __call__(self, parser, namespace, values, option_string=None):
print("default: {}({})\tdest: {}({})".format(self.default,
type(self.default), ge
Yclept Nemo added the comment:
>> None of those are specific to arithmetic progressions (i.e., range-like
>> lists / sets), as far as I can tell.
Does this (the data-type involved) really matter?
>> I could see more use for general list-intersection functionality.
Th
Yclept Nemo added the comment:
On a side note, glancing at Python-3.3.0a4/Objects/rangeobject.c:
range_contains seems to iterate through the entire range whereas __contains__
from the attached Range.py is O(1)
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Python tracker
<h
Yclept Nemo added the comment:
>>> a=Range.Range(5,61,4)
>>> ar=Range.Range(57,1,-4)
>>> b=Range.Range(21,63,6)
>>> br=Range.Range(57,15,-6)
>>> list(a); list(ar); list(b); list(br)
[5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57]
[57, 53, 49,
Yclept Nemo added the comment:
> max and min for a range object are already O(1) one-liners:
true; dropping
> As for __and__, it doesn't feel like a particularly natural operation to me,
> given that a range object represents an *ordered* sequence of integers rather
> t
New submission from Yclept Nemo :
Python 3.3 expands the range class but I would find some additional methods
useful:
min/max: provides O(1) time
__and__: provides intersection: Range(...) & Range(...)
examples:
intersection #1:
a=Range.Range(9,58,4)
b=Range.Range(15,69,6)
c=a&b
