[issue24789] ctypes doc string
New submission from David W. Lambert: doc string suggests str is a valid init argument. The code strongly discourages this. ctypes.create_string_buffer def create_string_buffer(init, size=None): """create_string_buffer(aBytes) -> character array create_string_buffer(anInteger) -> character array create_string_buffer(aString, anInteger) -> character array """ if isinstance(init, bytes): if size is None: size = len(init)+1 buftype = c_char * size buf = buftype() buf.value = init return buf elif isinstance(init, int): buftype = c_char * init buf = buftype() return buf raise TypeError(init) -- components: ctypes messages: 247998 nosy: LambertDW priority: normal severity: normal status: open title: ctypes doc string versions: Python 3.4 ___ Python tracker <http://bugs.python.org/issue24789> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16608] immutable subclass constructor call error does not show subclass name
David W. Lambert added the comment: Sorry again. You probably didn't follow the link I posted to see the problem origination. Which was "Cannot subclass str." I generalized this to tuple. On Tue, 2012-12-04 at 20:08 +, R. David Murray wrote: > R. David Murray added the comment: > > I have no idea what you are referring to by 'constructing str' :( > > I thought at first it was your incorrect tuple call in the init that was the > issue, but that didn't look right, and after reproducing it and playing with > it for a bit I figured out it was the __new__ failure, and I realized the > reason I was confused was that the error message said 'tuple' instead of 'c'. > So I definitely think that message could use improvement if it is practical. > > -- > > ___ > Python tracker > <http://bugs.python.org/issue16608> > ___ -- ___ Python tracker <http://bugs.python.org/issue16608> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16608] immutable subclass constructor call error does not show subclass name
David W. Lambert added the comment: The apparent problem was that the constructing str with __init__ failed. I now recall that immutables take initial values in the __new__ method. Sorry! Otherwise, it was quite thoughtful for you to search for a problem. Dave. -- ___ Python tracker <http://bugs.python.org/issue16608> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16608] subclass str fails
New submission from David W. Lambert: http://forums.devshed.com/newreply.php?do=newreply&noquote=1&p=2838814 >>> class c(tuple): ... def __init__(s,a,b): ... tuple.__init__(s,a) ... self.b = b ... >>> c(tuple(),666) Traceback (most recent call last): File "", line 1, in TypeError: tuple() takes at most 1 argument (2 given) >>> -- components: Interpreter Core messages: 176928 nosy: LambertDW priority: normal severity: normal status: open title: subclass str fails type: behavior versions: Python 2.7, Python 3.2 ___ Python tracker <http://bugs.python.org/issue16608> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13485] tcl question
New submission from David W. Lambert : I was unable to solve this question. http://forums.devshed.com/python-programming-11/setting-tkinter-checkbox-default-graphical-state-865148.html Summary: Trouble initiating button in "checked" state. If you answer to me, I'll post the answer at the devshed forum. If you answer at the forum I'll probably find it. I doubt this is a python bug. I doubt this is a tcl bug. I think the proper forum would be the "How do I use tcl?" forum. Sorry, I've posed the question here. Thank you, Dave Lambert also known as b49P23TIvg -- components: Library (Lib) messages: 148415 nosy: LambertDW priority: normal severity: normal status: open title: tcl question ___ Python tracker <http://bugs.python.org/issue13485> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13484] mail rejected: tu...@python.org
New submission from David W. Lambert : I sent this question to tu...@python.org as advertised at http://mail.python.org/mailman/listinfo/tutor The message was returned, and we still need an answer to the question. I'll post it as a separate bug. Thank you, Dave. From: David Ward Lambert To: tu...@python.org Subject:tkinter question I have not been able to resolve. Date: Mon, 21 Nov 2011 22:15:23 -0500 http://forums.devshed.com/python-programming-11/setting-tkinter-checkbox-default-graphical-state-865148.html Summary: Trouble initiating button in "checked" state. If you answer to me, I'll post the answer at the devshed forum. If you answer at the forum I'll probably find it. Thank you, Dave Lambert also known as b49P23TIvg -- components: None messages: 148414 nosy: LambertDW priority: normal severity: normal status: open title: mail rejected: tu...@python.org ___ Python tracker <http://bugs.python.org/issue13484> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13202] subprocess __exit__ attribute missing
New submission from David W. Lambert :
There are a number of issues with subprocess and __exit__ , 12494 status fixed
among them.
Program (which doesn't work as I had hoped, but that's not the issue):
'file p.py'
import subprocess as S
with
S.Popen(('cat','-n',),shell=False,stdin=S.PIPE,stdout=S.PIPE,bufsize=1,universal_newlines=True)
as p:
p.stdin.write('these\n')
print(p.stdout.readline())
Use:
$ python3 p.py
Traceback (most recent call last):
File "p.py", line 5, in
print(p.stdout.readline())
KeyboardInterrupt
$
$ python p.py
Traceback (most recent call last):
File "p.py", line 3, in
with
S.Popen(('cat','-n',),shell=False,stdin=S.PIPE,stdout=S.PIPE,bufsize=1,universal_newlines=True)
as p:
AttributeError: __exit__
$
$ python
Python 2.7.1+ (r271:86832, Apr 11 2011, 18:13:53)
[GCC 4.5.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>
--
components: Interpreter Core, Library (Lib)
messages: 145707
nosy: LambertDW
priority: normal
severity: normal
status: open
title: subprocess __exit__ attribute missing
versions: Python 2.7
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[issue8341] sphinx bug?
New submission from David W. Lambert :
http://docs.python.org/py3k/library/multiprocessing.html
Indentation is incorrect as displayed and copied from google chrome browser:
from multiprocessing import Process
def f(name):
print('hello', name)
if __name__ == '__main__':
p = Process(target=f, args=('bob',))
p.start()
p.join()
--
assignee: georg.brandl
components: Documentation
messages: 102583
nosy: LambertDW, georg.brandl
severity: normal
status: open
title: sphinx bug?
versions: Python 3.2
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[issue8338] Outdated information
New submission from David W. Lambert : http://docs.python.org/py3k/library/multiprocessing.html Doc/library/multiprocessing.rst refers to "SimpleHTTPServer.HttpServer". The patch changes this to "SimpleHTTPRequestHandler" although you may prefer "http.server.SimpleHTTPRequestHandler" or, of course, something entirely different. Thanks, Dave. -- assignee: georg.brandl components: Documentation files: multiprocessing_docs.patch keywords: patch messages: 102567 nosy: LambertDW, georg.brandl severity: normal status: open title: Outdated information versions: Python 3.1, Python 3.2, Python 3.3 Added file: http://bugs.python.org/file16807/multiprocessing_docs.patch ___ Python tracker <http://bugs.python.org/issue8338> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5479] Add an easy way to provide total ordering now that __cmp__ is deprecated/gone
David W. Lambert added the comment: http://en.wikipedia.org/wiki/Total_order For pair of items from a set, (that's the total) if a <= b and b <= c then a <= c (part of the order) if a <= b and b <= a then a compares the same as b, a == b, (the other part of the order) On Mon, 2010-04-05 at 19:46 +, Éric Araujo wrote: > Éric Araujo added the comment: > > Hello > > Small documentation question: Does the expression “total ordering” have > established usage in maths or computer science? Its meaning is not obvious to > the non-maths person that I am. > > Regards > > -- > > ___ > Python tracker > <http://bugs.python.org/issue5479> > ___ -- ___ Python tracker <http://bugs.python.org/issue5479> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8218] typo currect
David W. Lambert added the comment: I apologize for the noise. Yes, I'll read the article carefully and provide changes as a unified diff against the subversion trunk. On Wed, 2010-03-24 at 08:20 +, Martin v. Löwis wrote: > Martin v. Löwis added the comment: > > David, can you provide these changes as a unified diff against the subversion > trunk? > > -- > nosy: +loewis > > ___ > Python tracker > <http://bugs.python.org/issue8218> > ___ -- ___ Python tracker <http://bugs.python.org/issue8218> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8218] typo currect
David W. Lambert added the comment: There is an incredible number of frameworks s/is/are/ The majority of users is best s/is/are/ o work together as good as possible. s/good/well/ jects can be saven in a st s/saven/saved/ Thank you. I'm through for now. -- ___ Python tracker <http://bugs.python.org/issue8218> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8218] typo currect
David W. Lambert added the comment: you can rely an already existing rely on an -- ___ Python tracker <http://bugs.python.org/issue8218> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8218] typo currect
David W. Lambert added the comment: There is a number of middlewares are -- ___ Python tracker <http://bugs.python.org/issue8218> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8218] typo currect
David W. Lambert added the comment: much easier as is is specially designed more easily and is especially designed -- ___ Python tracker <http://bugs.python.org/issue8218> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8218] typo currect
David W. Lambert added the comment: "Another problem ist the basic concept" is -- ___ Python tracker <http://bugs.python.org/issue8218> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8218] typo currect
David W. Lambert added the comment: In same file, "intermangled with Python” and it has a “Publisher” which destignates" intermingled? designates? Thanks, Dave. -- ___ Python tracker <http://bugs.python.org/issue8218> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8218] typo currect
New submission from David W. Lambert : http://docs.python.org/py3k/howto/webservers.html The path to the interpreter in the shebang (#!/usr/bin/env python) must be currect. Sorry man there are a great many distractions here. -- assignee: georg.brandl components: Documentation messages: 101614 nosy: LambertDW, georg.brandl severity: normal status: open title: typo currect versions: Python 3.1 ___ Python tracker <http://bugs.python.org/issue8218> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8217] typo unterlying
New submission from David W. Lambert : http://docs.python.org/py3k/howto/webservers.html The low-level view When a user enters a web site, his browser makes a connection to the site’s webserver (this is called the request). The server looks up the file in the file system and sends it back to the user’s browser, which displays it (this is the response). This is roughly how the unterlying protocol, HTTP works. -- assignee: georg.brandl components: Documentation messages: 101610 nosy: LambertDW, georg.brandl severity: normal status: open title: typo unterlying versions: Python 3.1 ___ Python tracker <http://bugs.python.org/issue8217> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7076] Documentation add note about SystemRandom
David W. Lambert added the comment: I recall an experience with a random file in /dev that was considerably slow after consuming its cache. I used it as a seeder. I've now got an ubuntu system for which /dev/urandom gives me a hundred million bytes quickly. Perhaps a nosy one has more information? -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue7076> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7480] trite documentation issue.
New submission from David W. Lambert : http://docs.python.org/dev/py3k/library/stdtypes.html#index-559 Proposal: remove last sentence from "class.__bases__ The tuple of base classes of a class object. If there are no base classes, this will be an empty tuple." Reason: Sentence is a python 2 relic. The only case is this--- >>> object.__bases__ () Point being that documentation should be clear, puzzles left as a comprehension test. -- assignee: georg.brandl components: Documentation messages: 96269 nosy: LambertDW, georg.brandl severity: normal status: open title: trite documentation issue. versions: Python 3.1 ___ Python tracker <http://bugs.python.org/issue7480> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7466] Segmentation fault after about 20 seconds on lenovo T500
David W. Lambert added the comment: Further isolation, following change removes segmentation fault: digital_roots = tuple(map(digital_root,factorization)) becomes digital_roots = [digital_root(factor) for factor in factorization] -- ___ Python tracker <http://bugs.python.org/issue7466> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7466] Segmentation fault after about 20 seconds on lenovo T500
New submission from David W. Lambert :
'''
This brute [possibly a] solution to
http://projecteuler.net/index.php?section=problems&id=159
causes segmentation fault.
$ p3 # an AMD 64 bit build.
Python 3.1.1 (r311:74480, Oct 2 2009, 12:29:57)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more
information.
>>>
The block between "load_primes" and "print(result)" can be written
as a single statement using various comprehensions. sum(max(...))
The program does not seg-fault this way, but the result was wrong.
I unrolled the code to fix my algorithm, disclosing the segmentation
fault.
'''
import functools
import operator
import itertools
import array
PrimeQ = Primes = 'use load_primes(n) function'
def load_primes(n):
global PrimeQ,Primes
PrimeQ = sieve(1+n)
Primes = array.array('L',(i for (i,Q,) in enumerate(PrimeQ) if Q))
def sieve(n):
a = array.array('b',(True,))*n
a[0] = a[1] = False
for (i,j) in enumerate(a):
if j:
for k in range(i**2,n,i):
a[k] = False
return a
def PrimeRange(a):
'''
see "load_primes"
'''
n = 1+int(a**(1/2))
for p in Primes:
if n < p:
raise StopIteration
yield p
def PrimeFactor(a):
'''
see "load_primes"
>>> load_primes(30)
>>> print([PrimeFactor(x)for x in (6,7,)])
[[2, 3], [7]]
'''
if (a < len(PrimeQ)) and PrimeQ[a]:
return [a]
for p in PrimeRange(a):
(q,r,) = divmod(a,p)
if not r:
return [p]+PrimeFactor(q)
return [a]
def product(a):
return functools.reduce(operator.mul,a,1)
def digital_root(n):
while 9 < n:
n = sum(map(int,str(n)))
return n
def partition(L, chain=itertools.chain):
'''
python recipe by Ray Hettinger
'''
s = L
n = len(s)
first, middle, last = [0], range(1, n), [n]
return [[L[a:b] for (a,b) in zip(chain(first, div), chain(div,
last))]
for i in range(n) for div in itertools.combinations(middle,
i)]
load_primes(1000)
s = 0
for n in range(2,10**6):
factorizations = [
[product(p)for p in group]for group in
partition(PrimeFactor(n))]
mx = 0
for factorization in factorizations:
digital_roots = tuple(map(digital_root,factorization))
sdr = sum(digital_roots)
mx = max(mx,sdr)
s += mx
print('result!',s)
--
messages: 96190
nosy: LambertDW
severity: normal
status: open
title: Segmentation fault after about 20 seconds on lenovo T500
type: crash
versions: Python 3.1
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[issue7439] Bug or expected behavior? I cannot tell.
David W. Lambert added the comment: Thank you! A prime sieve variant is a better way to generate the generalized Hamming numbers I'm after, at least if the maximum is known ahead of time. Dave Lambert -- ___ Python tracker <http://bugs.python.org/issue7439> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7439] Bug or expected behavior? I cannot tell.
New submission from David W. Lambert : Raymond Hettinger posted clever Hamming number generator, http://code.activestate.com/recipes/576961/ which I tried to modify. The function gives incorrect output when called as hamming_numbers(shorthand = True). It seemed reasonable to expect the two arrangements of statements controlled by the shorthand boolean to be functionally equivalent. http://docs.python.org/3.1/reference/executionmodel.html is relevant, and makes me think this is not a bug, but I wish it were. I'd appreciate your determination. Thanks, Dave. from itertools import tee, chain, islice, groupby from heapq import merge def hamming_numbers(shorthand = False): def deferred_output(): for i in output: yield i result, p2, p3, p5 = tee(deferred_output(), 4) if shorthand: # Lambert modification m = [(a*x for x in p) for (a,p,) in ((2,p2),(3,p3),(5,p5))] assert m[0] is not m[2] merged = merge(*m) else: # original m2 = (2*x for x in p2) m3 = (3*x for x in p3) m5 = (5*x for x in p5) merged = merge(m2, m3, m5) combined = chain([1], merged) output = (k for k, v in groupby(combined)) return result if __name__ == '__main__': print(list(islice(hamming_numbers(), 10))) print(list(islice(hamming_numbers(True), 10))) -- components: Interpreter Core messages: 95981 nosy: LambertDW severity: normal status: open title: Bug or expected behavior? I cannot tell. type: behavior versions: Python 3.1 ___ Python tracker <http://bugs.python.org/issue7439> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7430] "cmp" still sends messages
New submission from David W. Lambert : ''' RuntimeError: maximum recursion depth exceeded in cmp Python 3.1.1 (r311:74480, Oct 2 2009, 12:29:57) [GCC 4.3.3] on linux2 ''' import itertools,pprint combos = itertools.combinations def connect(nodes,a,b): nodes[a].append(b) nodes[b].append(a) def insert(nodes,components): if components == 0: pprint.pprint(nodes) for (i,node,) in enumerate(nodes): if not node: break i += 2 for joints in combos(range(i),2): connect(nodes,*joints) nest = [node[:]for node in nodes] insert(nest,components-1) def e155(components): if components < 1: return 0 network = [[]for i in range((components+1)*2)] insert(network,components) return network e155(2) -- messages: 95943 nosy: LambertDW severity: normal status: open title: "cmp" still sends messages versions: Python 3.1 ___ Python tracker <http://bugs.python.org/issue7430> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7429] PrettyPrinter cannot print dicts with unsortable keys
David W. Lambert added the comment: I believe this issue was resolved---expect it in a future release. -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue7429> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3976] pprint._safe_repr is not general enough in one instance
Changes by David W. Lambert : -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue3976> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7237] Syntax error with not
David W. Lambert added the comment: problem also exists in 2.6. It's a, in my humble opinion, release blocker. -- type: compile error -> behavior ___ Python tracker <http://bugs.python.org/issue7237> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7237] Syntax error with not
New submission from David W. Lambert : lambertdw$ p3 Python 3.1.1 (r311:74480, Oct 2 2009, 12:29:57) [GCC 4.3.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> not 23 False >>> not(23&1) False >>> 1+not(23&1) File "", line 1 1+not(23&1) ^ SyntaxError: invalid syntax >>> -- components: Interpreter Core messages: 94675 nosy: LambertDW severity: normal status: open title: Syntax error with not type: compile error versions: Python 3.1 ___ Python tracker <http://bugs.python.org/issue7237> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5540] "file objects" in python 3 tutorial
David W. Lambert added the comment: File objects should not be discussed in the tutorial to emphasize that the file type is gone. File objects should be in the tutorial as a useful familiar concept. -- ___ Python tracker <http://bugs.python.org/issue5540> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5539] open documentation unclear
Changes by David W. Lambert : -- assignee: -> georg.brandl components: +Documentation nosy: +georg.brandl versions: +Python 3.0 ___ Python tracker <http://bugs.python.org/issue5539> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5540] "file objects" in python 3 tutorial
New submission from David W. Lambert : http://docs.python.org/dev/py3k/tutorial/inputoutput.html#methods-of- file-objects Is it proper to discuss file objects in py3K? -- assignee: georg.brandl components: Documentation messages: 83991 nosy: LambertDW, georg.brandl severity: normal status: open title: "file objects" in python 3 tutorial versions: Python 3.0 ___ Python tracker <http://bugs.python.org/issue5540> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5539] open documentation unclear
New submission from David W. Lambert : See thread http://groups.google.com/group/comp.lang.python/browse_thread/thread/85e c714aa6898d84# En Sun, 22 Mar 2009 19:12:13 -0300, Benjamin Peterson escribió: > Gabriel Genellina yahoo.com.ar> writes: >> The undocumented behavior is relying on the open() builtin to return a >> BufferedReader for a binary file. > I don't see the problem. open() will return some BufferedIOBase > implmentor, and > that's all that TextIOWrapper needs. How do you know? AFAIK, the return value of open() is completely undocumented: http://docs.python.org/3.0/library/functions.html#open And if you open the file in text mode, the return value isn't a BufferedIOBase. -- Gabriel Genellina The return value of open() is a "stream", according to http://docs.python.org/dev/py3k/library/io.html#module-io -- messages: 83990 nosy: LambertDW severity: normal status: open title: open documentation unclear ___ Python tracker <http://bugs.python.org/issue5539> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5513] "What's New" should say VERY CLEARLY that the type file is gone
David W. Lambert added the comment:
My file class extends text files with seek or read through condition or
pattern, providing an awk like pattern{action} task separation.
If I allow a pre-existing stream into my constructor (subprocess.Popen
my favorite) I still suffer the same garbage collection problem.
class file(io.TextIOWrapper):
'add condition matching to a stream'
def __init__(self,stream_or_name):
a = stream_or_name
buffer = (a.buffer if isinstance(a, io.TextIOWrapper)
else io.BufferedReader(io.FileIO(a, 'r')))
super().__init__(buffer)
Use this on a stream whose reference count goes to zero causes
ValueError: I/O operation on closed file. Increasing stream's reference
count by saving it with the object corrects it.
I appreciate your considerations.
Dave.
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[issue5513] "What's New" should say VERY CLEARLY that the type file is gone
David W. Lambert added the comment: #OOPS! I forgot the subtlety. #I must also retain the stream #else it gets collected. #Nasty. import io class file(io.TextIOWrapper): '''condensing code for this list without test is a no no!''' def __init__(self,name): self.stream = open(name) # SAVE THE STREAM! super().__init__(self.stream.buffer) -- ___ Python tracker <http://bugs.python.org/issue5513> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5513] "What's New" should say VERY CLEARLY that the type file is gone
David W. Lambert added the comment: # With py3Krc1 it took me days to figure out how to # replace my base class file. Granted, there were # issues with io module at the time. Following met # my need. import io class File(io.TextIOWrapper): '''Open a text file with read access, providing...''' def __init__(self,name): super().__init__(open(name).buffer) -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5513> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1520662] support all of strftime(3)
David W. Lambert added the comment: (I have no clue where the servers are.) -- ___ Python tracker <http://bugs.python.org/issue1520662> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1520662] support all of strftime(3)
David W. Lambert added the comment: (with similar links for strpfime). These are reasons a patch may be worth while: x difficult to work around using ctypes module with c library. x help(strftime) advises the programmer to see the reference manual for formatting codes. x Searching bugs.python.org open issues for strftime has 31 hits, some related. -- ___ Python tracker <http://bugs.python.org/issue1520662> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1520662] support all of strftime(3)
David W. Lambert added the comment: http://linux.die.net/man/3/strftime or this link may be in USA, if you care: http://www.manpagez.com/man/3/strftime/ -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue1520662> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2382] [Py3k] SyntaxError cursor shifted if multibyte character is in line.
David W. Lambert added the comment: Resolution of this may be applicable to Issue3446 as well. "center, ljust and rjust are inconsistent with unicode parameters" -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue2382> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3565] array documentation, method names not 3.0 compliant
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[issue5479] Add an easy way to provide total ordering now that __cmp__ is deprecated/gone
David W. Lambert added the comment: (As I recall) in python-dev mailing list Ray claimed he could clean up a cited active state recipe to address this issue. He succeeded to the extent I'm aware---he's the author of http://code.activestate.com/recipes/576685/. I haven't used the redundant >, >= comparisons operators in code since 1981. The chances of simplifying python by removing them from the language are None, but the mistake predates python by 10**n years, where (3 <= n <= 7) or (7 >= n >= 3). -- ___ Python tracker <http://bugs.python.org/issue5479> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5479] Add an easy way to provide total ordering now that __cmp__ is deprecated/gone
David W. Lambert added the comment: That's the best version I recall seeing at activestate. Still, I'd deprecate and remove > and >= from mathematics. -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5479> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5476] datetime: timedelta(minutes = i) silently fails with numpy.int32 input
David W. Lambert added the comment: With older versions of each timedelta rejects the data type. Maybe that's a good resolution? $ /usr/local/bin/python2.4 Python 2.4.2 (#2, Jul 7 2006, 10:20:47) [GCC 3.4.5 20051201 (Red Hat 3.4.5-2)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import numpy >>> numpy.version.version '0.9.8' >>> from numpy import int32 >>> from datetime import timedelta >>> assert timedelta(seconds = 36) == timedelta(seconds = int32(36)) Traceback (most recent call last): File "", line 1, in ? TypeError: unsupported type for timedelta seconds component: int32scalar >>> -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5476> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5420] Queue deprecation warning patch
Changes by David W. Lambert : -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5420> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5416] str.replace does strange things when given a negative count
David W. Lambert added the comment: I completely agree that this is a documentation issue. Also, or perhaps for foolish completeness, in http://docs.python.org/3.0/library/stdtypes.html we would point out that the following group of string methods also work for bytes and bytearrays. Of these, only str type has format method. "String Methods String objects support the methods listed below. Note that none of these methods take keyword arguments. In addition, Python’s strings support the sequence type methods described in the Sequence Types — str, bytes, bytearray, list, tuple, range section. To output formatted strings, see the String Formatting section. Also, see the re module for string functions based on regular expressions." -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5416> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1175686] add "reload" function to IDLE
David W. Lambert added the comment:
0->kbk
I avoid idle altogether and run python in emacs shell buffer. Switching
windows usually involves mice. Mice are evil.
emacs has gazillions of features.
artist mode (oops, mice!)
rectangular regions,
registers,
25 (hundreds with C-{digit}) reasonable places to move the cursor with a
couple keystrokes.
calc, modes, keyboard macros, mail, directory editing, buffer shared on
multiple x-servers ...
--
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[issue5383] Allow intermixing of keyword arguments and vargarg arguments
David W. Lambert added the comment:
I think you need this order preserving paradigm using python as is:
def xhtmlNode(tag,*args):
...
xhtmlNode('div', {'id':'sidebar'}, 'Hello world')
Less work in xhtmlNode might offset the extra work in writing the
function call. Oh well, I didn't read the pythonforum thread.
--
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[issue5382] Allow Python keywords as keyword arguments for functions.
David W. Lambert added the comment:
You can sneak them in thusly:
def f(**kwargs):
print(kwargs)
f(**{'class':'sidebar'})
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[issue5382] Allow Python keywords as keyword arguments for functions.
David W. Lambert added the comment: Use cases are easy to find. So easily found that there's probably a sound reason for reserved words. The proposal couples lexical analysis to the parser. # syntax error or name error? def f(): class return def f(class): class return -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5382> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4318] optparse: formatting of help text/descriptions
David W. Lambert added the comment:
granted, this isn't terribly difficult:
'\n'.join(textwrap.fill(line) for line in text.split('\n'))
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[issue4318] optparse: formatting of help text/descriptions
David W. Lambert added the comment:
I'd like textwrap option to preserve new lines. Actual case:
I have a code that produces cryptograms meant to be printed and solved
with paper and pencil. Standard format for cryptogram inserts space
character between each character of the original text, doubling the line
length. textwrap is handy to fit the cryptogram back to paper width.
Problem: When text to "cryptogramize" is a limerick original line breaks
should be preserved.
P A Y C Y H J K J K Q L Z B J U R G C V F P C Y I P , H A
V
K V O N A P I Y H H J R K P V U Y U Y I P . A Y C P R E ' Y
C
L A V L Z G O B B V G E V V G C V F J N O B B . K A Y
U Q Y U B J K P I Q N A P ; K A Y H J K K E Y I P .
J I V I R F V O K
import string
import random
import textwrap
def Shuffle(L):
random.shuffle(L)
return L
def create_cryptogram(quote):
"""
(disregards cryptogram rule that a letter can't stand for
itself)
doctest omitted
"""
# wish: wrap line-by-line to preserve original line breaks
wrapped_quote = textwrap.fill(text=quote,width=38).upper()
d = {c:c for c in string.printable}
d['\n'] = '\n'*2
UC = string.ascii_uppercase
d.update(zip(UC,Shuffle(list(UC
return ' '.join(d[c] for c in wrapped_quote)
--
nosy: +LambertDW
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[issue5350] Modification to "pairwise" in itertools recipes
David W. Lambert added the comment: Nice. I had thought of this a while ago but found counter example, probably using the empty iterator def f(): raise StopIteration yield I didn't realize "next" had optional argument. ___ Python tracker <http://bugs.python.org/issue5350> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5350] Modification to "pairwise" in itertools recipes
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[issue5332] csv sniffer
New submission from David W. Lambert :
Following instructions in
http://docs.python.org/dev/3.0/library/csv.html#module-csv
I opened file in binary mode. This might be simply a documentation
problem or it may run deeper. Text mode works on red hat linux system.
Here's the use:
>>> stream=open('csv','rb')
>>> dialect=csv.Sniffer().sniff(stream.read(1024))
Traceback (most recent call last):
File "", line 1, in
File "/usr/users/lambert/bin/python/lib/python3.0/csv.py", line 169,
in sniff
self._guess_quote_and_delimiter(sample, delimiters)
File "/usr/users/lambert/bin/python/lib/python3.0/csv.py", line 210,
in _guess_quote_and_delimiter
matches = regexp.findall(data)
TypeError: can't use a string pattern on a bytes-like object
Here's the conflicting documentation statement:
"If csvfile is a file object, it must be opened with the ‘b’ flag on
platforms where that makes a difference. ... see section Dialects and
Formatting Parameters.
All data read are returned as strings. No automatic data type conversion
is performed."
(Problem is that the binary file returnd data of type bytes.)
Thanks, Dave.
--
components: Library (Lib)
messages: 82546
nosy: LambertDW
severity: normal
status: open
title: csv sniffer
type: behavior
versions: Python 3.0
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[issue5331] multiprocessing hangs when Pool used within Process
David W. Lambert added the comment: Fails also on this system. $ p3 Python 3.0.1 (r301:69556, Feb 13 2009, 23:52:55) [GCC 3.4.6 20060404 (Red Hat 3.4.6-3)] on linux2 (...) >>> # use both hangs (...) >>> p.start() >>> p.join() (hmm la do diii laaa...)^C Traceback (most recent call last): File "", line 1, in File "/usr/users/lambert/bin/python/lib/python3.0/multiprocessing/process.py", line 119, in join res = self._popen.wait(timeout) File "/usr/users/lambert/bin/python/lib/python3.0/multiprocessing/forking.py", line 118, in wait return self.poll(0) File "/usr/users/lambert/bin/python/lib/python3.0/multiprocessing/forking.py", line 107, in poll pid, sts = os.waitpid(self.pid, flag) KeyboardInterrupt >>> -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5331> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5295] turtle.py "dicionary" spelling patch
New submission from David W. Lambert : x/lib/python3.0$ diff --unified turtle.py.bak turtle.py --- turtle.py.bak 2009-02-17 11:29:15.0 -0500 +++ turtle.py 2009-02-17 11:29:37.0 -0500 @@ -2265,7 +2265,7 @@ "outline": positive number "tilt" : number -This dicionary can be used as argument for a subsequent +This dictionary can be used as argument for a subsequent pen()-call to restore the former pen-state. Moreover one or more of these attributes can be provided as keyword-arguments. This can be used to set several pen attributes in one statement. -- components: Library (Lib) messages: 82341 nosy: LambertDW severity: normal status: open title: turtle.py "dicionary" spelling patch type: behavior versions: Python 3.0 ___ Python tracker <http://bugs.python.org/issue5295> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5247] Unhelpful error message with str.format()
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[issue5237] Allow auto-numbered replacement fields in str.format() strings
David W. Lambert added the comment:
Answering first question msg81873.
Without colon separator, this might be considered confusing:
>>> (
... '{d}{s}{f}{f}'.format(3, 'foo', 3.14, 2.72),
... '{d}{s}{f}{f}'.format(d=3, s='foo', f=3.14)
... )
('3foo3.142.72', '3foo3.143.14')
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[issue5237] Allow auto-numbered replacement fields in str.format() strings
David W. Lambert added the comment:
I am net yet fluent in format method. I meant
":" where "#" appeared.
Anyway, I think you need the colon.
If from
print('{0:9}'.format(33))
you make the argument number implicit and remove the colon you'd get
print('{9}'.format(33))
which does and should raise IndexError.
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[issue5237] Allow auto-numbered replacement fields in str.format() strings
David W. Lambert added the comment:
'{d}{s}{f}'.format(3, 'foo', 3.14)
is possibly unclear,
but is shorter than
'{#d}{#s}{#f}'.format(...)
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[issue5229] Documentation for super() neglects to say what super() actually does
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[issue5032] itertools.count step
David W. Lambert added the comment: I run my shells with low priority so I can sneak around and kill them. ___ Python tracker <http://bugs.python.org/issue5032> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5186] Reduce hash collisions for objects with no __hash__ method
David W. Lambert added the comment: "x |= x>>4" Are you (Ray) sure you didn't mean "x ^= x>>4"? -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5186> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5221] help related topic doesn't exist
New submission from David W. Lambert :
help function is not current, then again, neither is my python3.
Possibly sequencemethods[12] are eradicated.
$ p3
Python 3.0rc1+ (py3k, Nov 5 2008, 14:44:46)
[GCC 3.4.6 20060404 (Red Hat 3.4.6-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> help('SEQUENCEMETHODS')
...
Related help topics: SEQUENCES, SEQUENCEMETHODS2, SPECIALMETHODS
>>> help('SEQUENCEMETHODS1')
no Python documentation found for 'SEQUENCEMETHODS1'
>>> help('SEQUENCEMETHODS2')
no Python documentation found for 'SEQUENCEMETHODS2'
--
components: Interpreter Core
messages: 81668
nosy: LambertDW
severity: normal
status: open
title: help related topic doesn't exist
type: behavior
versions: Python 3.0
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[issue5192] Update log message formatting.
New submission from David W. Lambert :
Allow logger object log message creation methods using ''.format method.
have:
logger_object.info('%s','lazy is better')
logger_object.debug('{0!s}'.format('wasted effort'))
want:
logger_object.debug('{0}','Lazy')
Work'rounds from pep282:
if log.isEnabledFor(logging.INFO):
hamletStr = hamletDom.toxml()
log.info(hamletStr)
or install custom Formatter.
I presume this is already on the back burner.
Incidentally, BufferingFormatter.format uses string += string instead of
''.join(list_of_strings).
--
components: Library (Lib)
messages: 81461
nosy: LambertDW
severity: normal
status: open
title: Update log message formatting.
type: feature request
versions: Python 3.0, Python 3.1
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[issue5157] os.stat('foo') succeds if 'foo.exe' exists on cygwin
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[issue5142] pdb feature request: Ability to skip standard lib modules and other selected packages/modules
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[issue5126] Space character returns false from isprintable() method
David W. Lambert added the comment: Python 3.0rc1+ (py3k, Nov 5 2008, 14:44:46) [GCC 3.4.6 20060404 (Red Hat 3.4.6-3)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> ' '.isprintable() # probably no surprise: False >>> import sys >>> sys.getdefaultencoding() 'utf-8' -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5126> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5092] weird memory usage in multiprocessing module
David W. Lambert added the comment:
#Ah! Not a problem. You need globals() and locals() dictionaries.
# as a python3 script, this message produces next couple lines output.
#method one
#yup, global a is gone
#method two
#{'gv': 'local here', 'name': 'gv'}
#yup, global gv is gone
print('method one')
a = ''
def Delete_a_global_variable():
global a
del a
Delete_a_global_variable()
try:
a
print('whoops! this can never happen')
except NameError:
print('yup, global a is gone')
print('method two')
gv = '' # global variable
def delete_chosen_variable(name):
del globals()[name]
gv = 'local here'
print(locals())
delete_chosen_variable('gv')
try:
gv
print('whoops! this can never happen')
except NameError:
print('yup, global gv is gone')
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[issue5109] array.array constructor very slow when passed an array object.
David W. Lambert added the comment: memcpy won't work if the data type changes. (possibly signed <-> unsigned same-byte-count works). -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5109> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5092] weird memory usage in multiprocessing module
David W. Lambert added the comment:
The alternative is unreasonable. I doubt you'd be happy with this:
a = 'Something'
def variable_both_global_and_local()->Exception('No good!'):
del a# delete a from global name space
a = 'anotherthing' # define a in local name space
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[issue4174] Performance optimization for min() and max() over lists
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[issue4174] Performance optimization for min() and max() over lists
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[issue5099] subprocess.POpen.__del__() AttributeError (os module == None!)
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[issue5092] weird memory usage in multiprocessing module
David W. Lambert added the comment: My second answer is irrelevant. Function receives the global data as well as the arguments. ___ Python tracker <http://bugs.python.org/issue5092> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5092] weird memory usage in multiprocessing module
David W. Lambert added the comment: The del statement makes the variable local, as alluded to by http://docs.python.org/dev/3.0/reference/simple_stmts.html#the-del- statement The manual is clearer about assignments, which are local unless declared global or nonlocal. For other question, me thinks you need to write slightly cleverer code that passes only required data. I have experience with multiprocessing.Pool().map which lets me control the arguments I pass to functions. -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5092> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4707] round(25, 1) should return an integer, not a float
David W. Lambert added the comment: The value of one of the arguments controls how many digits there are. Certainly if you rounded $10 to the nearest cents you'd expect $10.00. Thus round(10,2) should be 10.00. Without using decimal module, the best we can do is produce 10.0. I'd apply a similar argument to convince you that the return value should be integral for negative "number of digits". Hark! This is python. We can take this correct and beautiful approach. We are not constrainded by function signatures of c++ or FORTRAN90. ___ Python tracker <http://bugs.python.org/issue4707> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4707] round(25, 1) should return an integer, not a float
David W. Lambert added the comment:
I'd prefer round(x,positive_integer) return float. Returning int is a
bit of a lie, except that the decimal module is available to avoid this
sort of lie.
For non-positive integer roundings I'd like an integer return.
In my opinion, we'd benefit from this definition of round:
import numbers
def round(a,p=0,base=10):
'''
>>> round(147,-1,5)
145.0
>>> round(143,-1,5)
145.0
>>> round(142,-1,5)
140.0
>>> round(12.345,1,2)
12.5
>>> round(12.345,2,2)
12.25
>>> round(12.345,-2,2)
12
>>> round(12.345,-3,2)
16
'''
# consider using sign transfer for negative a
if base < 1:
raise ValueError('base too confusing')
require_integral_output = (
(p < 1) and
isinstance(base, numbers.Integral) and
isinstance(p, numbers.Integral))
b = base**p
result = int(a*b+0.5)/b
if require_integral_output:
result = int(0.5+result)
return result
--
nosy: +LambertDW
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[issue1397474] timeit execution enviroment
Changes by David W. Lambert : -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue1397474> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5032] itertools.count step
David W. Lambert added the comment: Probably a better prime factor algorithm uses Sieve of E. to generate primes through int(1+sqrt(n)) and test these. The other algorithm uses a custom generator anyway. Oh well, good luck, I'll shut up. You do have use cases that I couldn't think of. Dave. ___ Python tracker <http://bugs.python.org/issue5032> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5032] itertools.count step
David W. Lambert added the comment: Nice. Now I know that $e$ is a least transcendental number. But I can't figure out why inserting this code into your file (and removing some "itertools.") is difficult or unreadable. I maintain a personal library of modules that I don't actually expect Guido to include in the python standard library. import itertools def count(offset=0,stride=1): for i in itertools.count(): yield offset+i*stride # this version probably performs faster def count(offset=0,stride=1): while True: yield offset offset += stride ___ Python tracker <http://bugs.python.org/issue5032> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5061] Inadequate documentation of the built-in function open
David W. Lambert added the comment: (prospective, not perspective programmer) Spelling out the possibilities as suggested in Message80563 makes better sense to me than writing in words the logic handling the mode argument of the io.open function. (Perhaps there is a clearer implementation using a dictionary with frozenset keys, but the io module for py3k is being recast in c, per my understanding.) ___ Python tracker <http://bugs.python.org/issue5061> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5061] Inadequate documentation of the built-in function open
David W. Lambert added the comment: I disagree. You propose to examine the trees but ignore the forest. The perspective programmer needs to understand what is a file. -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue5061> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5044] name not found in generator in eval()
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[issue2527] Pass a namespace to timeit
David W. Lambert added the comment:
This note is simply a reminder that Antoine's 'from __main__ import *'
solution fails in python3. Also, resolution of this issue probably
could incorporate Issue1397474.
>>> import timeit
>>> timeit.timeit('None','from __main__ import *')
Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python3.0/timeit.py", line 227, in timeit
return Timer(stmt, setup, timer).timeit(number)
File "/usr/local/lib/python3.0/timeit.py", line 135, in __init__
code = compile(src, dummy_src_name, "exec")
File "", line 2
SyntaxError: import * only allowed at module level
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[issue5032] itertools.count step
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[issue5029] Odd slicing behaviour
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[issue5028] tokenize.generate_tokens doesn't always return logical line
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[issue4994] subprocess (Popen) doesn't works properly
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[issue4899] doctest should support fixtures
David W. Lambert added the comment: For unittests I recommend two things instead of need for doctest change. A decoupled strict test to prove that the iterator works, and this class to publish, class Tped_use_cases(...): def test_Marker_iteration(self): ''' Illustrative code adapted from what is now your doctest ''' ... ___ Python tracker <http://bugs.python.org/issue4899> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4899] doctest should support fixtures
David W. Lambert added the comment:
My goodness, that's the starting base sequence to gene 38c, chromosome 4
of the Columbian caldera cricket! But seriously...
1) The relevant part of the doc string is this, and this is how it
should read (your argument being "if doctests provided setUp framework
my doc string would look like this!"):
def TpedIterator(handle):
'''
Iterates on an TPed file handler.
Returns Marker objects.
Tped_stream = open('cricket.sequence','r')
ti = TpedIterator(Tped_stream)
for marker in ti:
use(marker)
'''
2) (With the caveat that I am unfamilar with your project.) You should
choose terminology appropriate for your project. A computer scientist
would expect "file handle" to be an integer. What you call "handle" is
clearly a "stream" object and therefore of uncommon name. Since the
file objects are more likely to be from the computer sciences rather
than the biological realm you should stick with "stream".
3) We agree, "Don't Repeat Yourself". The last two chunks of your file
enable doctest. I'll guess that similar lines may be found repeated
throughout your sources. Instead of internal support, write a single
test script that provides external support. It would process named
files with unittest, doctest.[, and customtests.]
$ python -c 'import test' glob
There may be a python library for this. I can't guide you easily
because I built and use my own framework. Nor have I bothered to figure
out how python runs its own installation tests.
4) Yes, unittest are quite appropriate for your project. When you move
your docstring tests to unittests try to isolate the tests. For
instance, the test you've shown couples the TpedIterator with the string
representation of a Marker object.
5) Is your system really so simple that it's useful to run
interactively? I may be out of touch but I script most of my codes and
tests because I make so many errors and module changes. In other words,
is your interactive docstring example a reasonable use case?
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[issue4925] Improve error message of subprocess
David W. Lambert added the comment: (Actual command stream includes chmod +x ./s.sh) ___ Python tracker <http://bugs.python.org/issue4925> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4925] Improve error message of subprocess
David W. Lambert added the comment: Related, but outside python realm, this error likewise confuses: $ cat < s.sh #! invalid path echo hi EOF $ ./s.sh zsh: no such file or directory: ./s.sh -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue4925> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4760] cmp gone documentations
David W. Lambert added the comment: http://docs.python.org/dev/3.1/library/unittest.html#module-unittest Search for "cmp". There are two references. I apologize if I misunderstand issue 1717, -- title: cmp gone---What's new in 3.1 -> cmp gone documentations ___ Python tracker <http://bugs.python.org/issue4760> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4899] doctest should support fixtures
David W. Lambert added the comment: I disagree. Purpose of __doc__ is to explain functionality all at once. This command idiom is useful: $ python -c 'from a_module import thing; help(thing)' The doctest module is a lightweight nicety that helps verify that which is suitable. The sufficiently simple algorithms of my code have doc strings that are the complete test and explanation. For others I provide both docstring and unit tests. But with many I explain the arguments and output, possibly the algorithm in a doc string. Tests and use case examples reside in the module's unit test. I'm among the "Choose correct tool for the job. python comes with full tool bag." group. -- nosy: +LambertDW ___ Python tracker <http://bugs.python.org/issue4899> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4816] Patch of itertools.{combinations, permutations} for empty combinations
David W. Lambert added the comment: I had thought highly of the "mull it over for a week" plan. After a week we'd decide to follow Stephen Wolfram's lead, which seems to be the current patch. I haven't yet used the python permutations iterator, although I used to have a script that solved word JUMBLE puzzles with a mathematica | spell pipeline. Now I look up words using a sorted anagram dictionary. ___ Python tracker <http://bugs.python.org/issue4816> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4816] Patch of itertools.{combinations, permutations} for empty combinations
David W. Lambert added the comment: I try to "not know" excel. Does it have any other means to represent an empty set? ___ Python tracker <http://bugs.python.org/issue4816> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4816] Patch of itertools.{combinations, permutations} for empty combinations
David W. Lambert added the comment:
Mathematica indicates for the user to define it later. An error.
In[3]:= Permutations[{1,2},{-2}]
Permutations::nninfseq:
Position 2 of Permutations[{1, 2}, {-2}]
must be All, Infinity, a non-negative integer, or a List whose
first
element (required) is a non-negative integer, second element
(optional)
is a non-negative integer or Infinity, and third element (optional)
is a
nonzero integer.
Out[4]= Permutations[{1, 2}, {-2}]
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