Yes, Michael, a dictionary is an excellent way to represent a closed set of
transitions which your permutations are.
You examples use numerals but obviously a dictionary will allow transformations
of anything that can be hashed which mostly is items that are not mutable.
Of course for the purpose
On 25/04/2022 04.21, pjfarl...@earthlink.net wrote:
>> -Original Message-
>> From: dn
>> Sent: Saturday, April 23, 2022 6:05 PM
>> To: python-list@python.org
>> Subject: Re: tail
>>
>
>> NB quite a few of IBM's (extensively researched) algorithms which formed
>> utility
>> program[me]s
On 25/04/2022 01.24, Michael F. Stemper wrote:
> On 23/04/2022 12.43, Avi Gross wrote:
>> Given what you added, Michael, your function is part of a
>> larger collection of functions and being compatible with the others
>> is a valid consideration. Whatever you decide, would ideally be done
>> consi
On Sun, 24 Apr 2022 12:21:36 -0400, declaimed the
following:
>
>WRT the mentioned IBM utility program[me]s, the non-Posix part of the IBM
>mainframe file system has always provided record-managed storage since the
>late 1960's (as opposed to the byte-managed storage of *ix systems) so
>searchi
On 24/04/2022 08.24, Michael F. Stemper wrote:
On 23/04/2022 12.43, Avi Gross wrote:
Given what you added, Michael, your function is part of a larger collection of
functions and being compatible with the others is a valid consideration.
Whatever you decide, would ideally be done consistently w
On 23/04/2022 12.43, Avi Gross wrote:
Given what you added, Michael, your function is part of a larger collection of
functions and being compatible with the others is a valid consideration.
Whatever you decide, would ideally be done consistently with all or most of
them.
And, of course, it oth
> -Original Message-
> From: dn
> Sent: Saturday, April 23, 2022 6:05 PM
> To: python-list@python.org
> Subject: Re: tail
>
> NB quite a few of IBM's (extensively researched) algorithms which formed
> utility
> program[me]s on mainframes, made similar such algorithmic choices, in the
>
On Sun, 24 Apr 2022 at 11:21, Roel Schroeven wrote:
> dn schreef op 24/04/2022 om 0:04:
> > Disagreeing with @Chris in the sense that I use tail very frequently,
> > and usually in the context of server logs - but I'm talking about the
> > Linux implementation, not Python code!
> If I understand
On Mon, 25 Apr 2022 at 01:47, Marco Sulla wrote:
>
>
>
> On Sat, 23 Apr 2022 at 23:18, Chris Angelico wrote:
>>
>> Ah. Well, then, THAT is why it's inefficient: you're seeking back one
>> single byte at a time, then reading forwards. That is NOT going to
>> play nicely with file systems or buffer
On Sun, 24 Apr 2022 at 00:19, Cameron Simpson wrote:
> An approach I think you both may have missed: mmap the file and use
> mmap.rfind(b'\n') to locate line delimiters.
> https://docs.python.org/3/library/mmap.html#mmap.mmap.rfind
>
Ah, I played very little with mmap, I didn't know about this.
On Sat, 23 Apr 2022 at 23:18, Chris Angelico wrote:
> Ah. Well, then, THAT is why it's inefficient: you're seeking back one
> single byte at a time, then reading forwards. That is NOT going to
> play nicely with file systems or buffers.
>
> Compare reading line by line over the file with readline
On 4/23/22, Sunil KR via Python-list wrote:
>
> I am happy with how the python starts up. When I use python I get
> python 2. I am ok with using py -3 for my new scripts, even using the
> shebang like #!py -3
`#!py -3` is not a valid shebang for the py launcher. Use `#!python3`
to run a script wi
I have been getting confused by how many interpretations and conditions for
chasing tail people seem to be talking about.
A fairly normal task is to want to see just the last N lines of a text-based
file.
A variant is the "tail -f" command from UNIX that continues to follow a growing
file, ofte
On Sun, 24 Apr 2022 at 21:11, Antoon Pardon wrote:
>
>
>
> Op 23/04/2022 om 20:57 schreef Chris Angelico:
> > On Sun, 24 Apr 2022 at 04:37, Marco Sulla
> > wrote:
> >> What about introducing a method for text streams that reads the lines
> >> from the bottom? Java has also a ReversedLinesFileRea
Op 23/04/2022 om 20:57 schreef Chris Angelico:
On Sun, 24 Apr 2022 at 04:37, Marco Sulla wrote:
What about introducing a method for text streams that reads the lines
from the bottom? Java has also a ReversedLinesFileReader with Apache
Commons IO.
1) Read the entire file and decode bytes to
dn schreef op 24/04/2022 om 0:04:
Disagreeing with @Chris in the sense that I use tail very frequently,
and usually in the context of server logs - but I'm talking about the
Linux implementation, not Python code!
If I understand Marco correctly, what he want is to read the lines from
bottom to t
On 2022-04-24 01:19:38 +, Sunil KR via Python-list wrote:
> But the real question/s for me is/are
>
> -- Why are my strings being sent to python3, so that I get the unicode
> related error?
You haven't shown us how you invoke those scripts, so we can't answer
that question with the informati
The question is not one of conversion. The question is this:
When I have both python 2 and python3, why is my python 2 script breaking? And
when I remove python3 the problem goes away?
In both cases (regardless of installing python 3 or not) I am using only python
2 to run the python2 script. W
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