simona bellavista wrote:
> Hi All,
>
> I have a problem with reading data from a file using genfromtxt of
> numpy module.
>
> I have prepared a minimal example similar to the ones presented in
>
> http://docs.scipy.org/doc/numpy/user/basics.io.genfromtxt.html#splitting-
the-lines-into-columns
>
tazz_ben wrote:
> So, I'm using optparse as follows:
>
> Command line:
> python expense.py ">$100" -f ~/desktop/test.txt
> ['>00']
>
>
> In Main:
>
> desc = ''
> p = optparse.OptionParser(description=desc)
>
> utilities = optparse.OptionGroup(p, 'Utility Options')
> utilities.add_option('--fi
Shafique, M. (UNU-MERIT) wrote:
> Hi,
> I have a number of different groups g1, g2, … g100 in my data. Each group
> is comprised of a known but different set of members from the population
> m1, m2, …m1000. The data has been organized in an incidence matrix:
> g1g2g3g4g5
> m01
> m210010
> m301
Chris Angelico wrote:
> Context: Embedded Python interpreter, version 2.6.6
>
> I have a list of dictionaries, where each dictionary has a "type"
> element which is a string. I want to reduce the list to just the
> dictionaries which have the same "type" as the first one.
>
> lst=[{"type":"calc"
Frank Millman wrote:
> On linux, python 3.2 -
>
x = input()
> xyz
len(x)
> 3
x
> 'xyz'
>
> on windows, python 3.2 -
>
x = input()
> xyz
len(x)
> 4
x
> 'xyz\r'
>
> Is this expected behaviour?
No, that's a bug:
http://bugs.python.org/issue11272
IMO it's severe e
Laszlo Nagy wrote:
> Given this iterator:
>
> class SomeIterableObject(object):
>
>
>
> def __iter__(self):
> ukeys = self.updates.keys()
> for key in ukeys:
> if self.updates.has_key(key):
> yield self.updates[key]
>
Peter Otten wrote:
> Laszlo Nagy wrote:
>
>> Given this iterator:
>>
>> class SomeIterableObject(object):
>>
>>
>>
>> def __iter__(self):
>> ukeys = self.updates.keys()
>> for key in ukeys:
vino19 wrote:
> Hello, I'm a newbie.
> What's the defference between
>
a=-6; b=-6; a is b
True
>
> and
>
a=-6
b=-6
a is b
False
>
> ?
When you write it as a single line the assignments to a and b are part of
the same compilation process, and as an optimization CPython
Steven D'Aprano wrote:
> but:
>
a = 1001; b = 10001; a is b
> False
I would hope so ;)
> The point is that Python is free to re-use immutable objects, or not re-
> use them, as it sees fit.
Indeed, and I even found a Python implementation on my harddisk that does
what you intended to sh
Vlastimil Brom wrote:
> Hi all,
> I'd like to ask for comments or advice on a simple code for testing a
> "subdict", i.e. check whether all items of a given dictionary are
> present in a reference dictionary.
> Sofar I have:
>
> def is_subdict(test_dct, base_dct):
> """Test whether all the it
Zero Piraeus wrote:
> :
>
>>> I'd like to ask for comments or advice on a simple code for testing a
>>> "subdict", i.e. check whether all items of a given dictionary are
>>> present in a reference dictionary.
>
> Anything wrong with this?
>
> def is_subdict(test_dct, base_dct):
> return tes
Zero Piraeus wrote:
>>> Anything wrong with this?
>>>
>>> def is_subdict(test_dct, base_dct):
>>> return test_dct <= base_dct and all(test_dct[k] == base_dct[k] for
>>> k in test_dct)
>>
>> It may raise a KeyError.
>
> Really? That was what ``test_dct <= base_dct and`` ... is supposed to
> preven
Zero Piraeus wrote:
> :
>
> On 22 April 2011 13:30, Peter Otten <__pete...@web.de> wrote:
>>>>> def is_subdict(test_dct, base_dct):
>> ... return test_dct <= base_dct and all(test_dct[k] == base_dct[k]
>> for ... k in test_dct)
>> ...
>&
ivdn...@gmail.com wrote:
> I have a service that runs in python 2.6.4. This service sends
> LogRecords to a log monitoring app on my workstation running python
> 2.7. The LogRecord class is derived:
>
> class LogRecord(logging.LogRecord):
>
> def __init__(self, name, level, fn, lno, user, ho
Vinay Sajip wrote:
> On Apr 27, 5:41 pm, Peter Otten <__pete...@web.de> wrote:
>
>> The Problem is that as of Python 2.7logging.LogRecord has become a
>> newstyle class which is pickled/unpickled differently. I don't know if
>> there is an official way to do t
Andrew Berg wrote:
> I've set up groups of arguments for a script I'm writing, and any time I
> give an argument a value, it gets stored as a list instead of a string,
> even if I explicitly tell it to store a string. Arguments declared with
> other types (e.g. float, int) and default values are s
loial wrote:
> When I correctly trap an IOError a spurious u' appears in the file
> path in the exception message :
>
> The path used in the code is correct i.e. /home/myfile
>
> But the error message says :
>
> [Errno 2] No such file or directory: u'/home/myfile'
>
>
> I am simply doing
>
>
Unknown Moss wrote:
> Hi
>
> This is a beginner question. Thanks for the hand.
>
> I've been asked to maintain some poorly constructed python code.
> Logging is weak. Getting it to work with python logging
> programmatically was easy.
>
> However, I'd like to refactor all the logging code into
harrismh777 wrote:
> def fib(i=1):
> a=1;n=1;l=[]
> for j in range(0,i):
> l.append(a)
> p=a;a=n;n=p+a
Hm, did you run out of newlines?
> return l
>
> list=fib(7)
>
>
>
> ... and the above, is how I would actually code it
>
>
>
>
Nah, that can't be i
harrismh777 wrote:
> Ian Kelly wrote:
>> since the fact is that if
>> the function were properly coded, the call stack for fib(20) would
>> never be more than 20 entries deep at any one time.
>>
>
> Not so much... and much more !
>
>
> ... because each recursion level 'return' calls fib()
Matthias Kievernagel wrote:
> In my top-level script I want to select if my program
> is to use random.xxx functions or the random.SystemRandom.xxx
> ones. All the other modules shouldn't know about that
> switch and simply use
> import random
> ...
> return random.randint(1, 6)
> ...
> for exampl
harrismh777 wrote:
> Peter Otten wrote:
>> For the record, the one true way to implement the Fibonacci series in
>> Python is
>>
>>>>> >>> def fib():
>> ... a = b = 1
>> ... while True:
>> ... yield a
&g
Ulrich Eckhardt wrote:
> Chris Rebert wrote:
>>> 3. The docs mention encodings.utf_8_sig, available since 2.5, but I
>>> can't locate that thing there either. What's going on here?
>>
>> Works for me™:
>> Python 2.6.6 (r266:84292, Jan 12 2011, 13:35:00)
>> [GCC 4.2.1 (Apple Inc. build 5664)] on d
Stefan Kuzminski wrote:
> I have an extension type written in C, but I cannot get it to pickle, any
> insights would be greatly appreciated.
>
> I see in the docs that I should define a __reduce__ method and that does
> get called, but I don't know specifically the type of the 'callable
> object'
Jens Lechtenboerger wrote:
> I'm looking for a regular expression to recognize natural language
> words with umlauts but without numbers. While \w with re.U does
> recognize words with umlauts, it also matches numbers, which I do
> not want.
>
> Is there a better way than an exhaustive enumerati
TheSaint wrote:
> I've stumble to find a solution to get a list from a set
>
>
>
aa= ['a','b','c','f']
aa
> ['a', 'b', 'c', 'f']
set(aa)
To clarify: this creates a new object, so aa is still a list.
> {'a', 'c', 'b', 'f'}
[k for k in aa]
> ['a', 'b', 'c', 'f']
So you are
Daniel Kluev wrote:
>> Both solutions seem to be equivalent in that concerns the number of
>> needed loop runs, but this two-step operation might require one less loop
>> over list1. The set&set solution, in contrary, might require one loop
>> while transforming to a set and another one for the &
J wrote:
> Good morning all,
> Wondering if you could please help me with the following query:-
> I have just started learning Python last weekend after a colleague of mine
> showed me how to dramatically cut the time a Bash script takes to execute
> by re-writing it in Python. I was amazed at ho
J wrote:
> Hello Peter, Angelico,
>
> Ok lets see, My aim is to filter out several fields from a log file and
> write them to a new log file. The current log file, as I mentioned
> previously, has thousands of lines like this:- 2011-05-16 09:46:22,361
> [Thr
Jackson wrote:
> I'm currently using a function pasted in below. This allows me to sum
> a column (index) in a list of lists.
>
> So if mylist = [[1, 2, 3], [1, 3, 4], [2, 3, 4], [2, 4, 5]]
> group_results(mylist,[0],1)
>
> Returns:
> [(1, 5), (2, 7)]
>
> What I would like to do is allow a tupl
people call "iteration". This might be
the first time I have ever found a point of agreement with Xah Lee.
--
Peter Moylan, Newcastle, NSW, Australia. http://www.pmoylan.org
For an e-mail address, see my web page.
--
http://mail.python.org/mailman/listinfo/python-list
;
> Recursion: (N). See recursion.
It's interesting to note that the definitions of 'recursive' to be found
in Wikipedia and Wiktionary have very little in common with the
definitions to be found in the dictionaries covered by Onelook. No
wonder experts in different areas have trouble
rusi wrote:
> On May 18, 5:09 pm, Peter Moylan
> wrote:
>> ObAUE: In common parlance, the English word "recursion" means pretty
>> much the same as what computing people call "iteration". This might be
>> the first time I have ever found a point of a
Ethan Furman wrote:
> Several folk have said that objects that compare equal must hash equal,
> and the docs also state this
> http://docs.python.org/dev/reference/datamodel.html#object.__hash__
>
> I'm hoping somebody can tell me what horrible thing will happen if this
> isn't the case? Here's
Ethan Furman wrote:
> Peter Otten wrote:
>> Ethan Furman wrote:
>>
>>> Several folk have said that objects that compare equal must hash equal,
>>> and the docs also state this
>>> http://docs.python.org/dev/reference/datamodel.html#object.__hash__
&g
bvdp wrote:
> I've just done an update to my system here to Ubuntu 11.04. Mostly no
> problems ... but I have an important (to me) python/TK program that's
> stopped working. Well, it works ... mostly.
>
> The python version is 2.7.1+ (no idea what the + means!).
>
> I _think_ I have traced the
Gregory Ewing wrote:
> Ethan Furman wrote:
>> Ulrich Eckhardt wrote:
>>
>>> If two equal objects have different hashes, they
>>> will be stored in different places in the hash map. Looking for
>>> object1 will then not turn up with object2, even though they are equal.
>>
>> In this case this is
James Stroud wrote:
> tal 65% python2.7
> Python 2.7.1 (r271:86832, May 21 2011, 22:52:14)
> [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
> Type "help", "copyright", "credits" or "license" for more information.
> py> class C(object):
> ... def __init__(self):
> ... self.data = []
>
James Stroud wrote:
> Peter Otten wrote:
>> James Stroud wrote:
>>> WTF?
>>
>> Put the code into a file, run it -- and be enlightened ;)
>
>
> tal 72% python2.7 eraseme.py
> 1
> 2
> 4
> 8tal 73% cat eraseme.py
> #! /usr/bin/env python
&
ad wrote:
> Please review the code pasted below. I am wondering what other ways
> there are of performing the same tasks. This was typed using version
> 3.2. The script is designed to clean up a directory (FTP, Logs, etc.)
> Basically you pass two arguments. The first argument is an number of
> da
Albert Hopkins wrote:
> On Fri, 2011-05-27 at 14:25 -0700, suresh wrote:
>> I want to execute the following command line stuff from inside python.
>> $cd directory
>> $./executable
>>
>> I tried the following but I get errors
>> import subprocess
>> subprocess.check_call('cd dir_name;./executabl
Daniel Kluev wrote:
>> So I'd like to know: how do these other implementations handle
>> concurrency matters for their primitive types, and prevent them from
>> getting corrupted in multithreaded programs (if they do) ? I'm not only
>> thinking about python types, but also primitive containers and
On Sun, 29 May 2011 04:30:52 -0400, Henry Olders wrote:
[snip]
> def main():
> a = ['a list','with','three elements']
> print a
> print fnc1(a)
> print a
>
> def fnc1(b):
> return fnc2(b)
>
> def fnc2(c):
> c[1] = 'having'
> return c
>
> This is the
Laurent Claessens wrote:
> Le 30/05/2011 11:02, Terry Reedy a écrit :
>> On 5/30/2011 3:38 AM, Laurent wrote:
>>
>>> Cool. I was thinking that "5" was the name, but
>>> >>> 5.__add__(6)
>>> File "", line 1
>>> 5.__add__(6)
>>
>>
>> Try 5 .__add__(6)
>
> What is the rationale behind the fact
Gabriel wrote:
> Well, the subject says it almost all: I'd like to write a small Vector
> class for arbitrary-dimensional vectors.
>
> I am wondering what would be the most efficient and/or most elegant
> way to compute the length of such a Vector?
>
> Right now, I've got
>
> def length(self)
rantingrick wrote:
> On May 18, 7:19 am, Peter Moylan
> wrote:
>
>> It's interesting to note that the definitions of 'recursive' to be found
>> in Wikipedia and Wiktionary have very little in common with the
>> definitions to be found in the dictionaries
ng of "share" has contributed
anything of value to the language. Which is possibly why people stopped
using it in about the 1980s.
--
Peter Moylan, Newcastle, NSW, Australia. http://www.pmoylan.org
For an e-mail address, see my web page.
--
http://mail.python.org/mailman/listinfo/python-list
Christopher Reimer via Python-list wrote:
> Greetings,
>
> I was playing around this piece of example code (written from memory).
>
>
> def filter_text(key, value):
>
> def do_nothing(text): return text
>
> return {'this': call_this,
>
> 'that': call_that,
>
> 'what': do_nothing
>
> }
Christopher Reimer via Python-list wrote:
> Greetings,
>
> I was playing around this piece of example code (written from memory).
>
>
> def filter_text(key, value):
>
> def do_nothing(text): return text
>
> return {'this': call_this,
>
> 'that': call_that,
>
> 'what': do_nothing
>
> }
Sambit Samal wrote:
> Hi ,
>
> Need help in Python Script using xml.etree.ElementTree to update the
> value of any element in below XML ( e.g SETNPI to be 5 ) based on some
> constraint ( e.g ) .
Something along the lines
from xml.etree import ElementTree as ET
tree = ET.parse("original.xml"
Antoon Pardon wrote:
> Python 2.6.4 on a solaris box.
>
> I have a program in which all kind of excptions can be thrown and caugth.
> The main program is something like below:
>
> try:
> do_stuff
> except Exception:
> log unexpected trouble
>
> Now I found the following in the logs: [Er
Friedrich Rentsch wrote:
> Hi, I am setting up Python 2.7 after an upgrade to Ubuntu 16.04, a
> thorough one, leaving no survivors. Everything is fine, IDLE opens,
> ready to go. Alas, execfile and import commands don't do my bidding, but
> hang IDLE. All I can do is kill the process named "python
Andrej Viktorovich wrote:
> Hello,
>
> I have Python package tst in my workspace.
>
> tst has files:
> __init__.py
> tst.py
>
>
> content of __init__.py:
> print("importing Tst")
>
>
> content of tst.py:
> class Tst:
> def __init__(self):
> print("init Tst")
>
>
> I run python
Friedrich Rentsch wrote:
>
>
> On 06.09.2017 10:52, Peter Otten wrote:
>> Friedrich Rentsch wrote:
>>
>>> Hi, I am setting up Python 2.7 after an upgrade to Ubuntu 16.04, a
>>> thorough one, leaving no survivors. Everything is fine, IDLE opens,
>
Josef Meile wrote:
> Hi
>
> I'm working with gettext and need to define a language Fallback. I got
> this working, but with a global variable. I don't really like this and I
> would like to pass this variable to the gettext Fallback's contructor, but
> I don't know how. For simplicity, I won't pu
leam hall wrote:
> On Thu, Sep 7, 2017 at 8:16 AM, Steve D'Aprano
> wrote:
>
>> On Thu, 7 Sep 2017 07:20 pm, Leam Hall wrote:
>>
>> > OOP newbie on Python 2.6.
>>
>> Python 2.6 is ancient, and is missing many nice features. You should
>> consider
>> using the latest version, 3.6.
>>
>
> I've wr
Josef Meile wrote:
> language = kwargs['language']
> del kwargs['language']
Not really important, but there's a method for that:
language = kwargs.pop("language")
> def __init__(self, *args, **kwargs):
> language = kwargs['language']
> del kwargs['language']
In Python 3 this can also
Stefan Ram wrote:
> Maybe you all know this, but to me this is something new.
> I learnt it by trial and error in the Python 3.6.0 console.
>
> Most will know list comprehensions:
>
> |>>> [ i for i in range( 3, 5 )]
> |[3, 4]
>
> I found out that the comprehension can be detached from
Andrej Viktorovich wrote:
> What is difference between string definitions:
> s="aaa"
> and
> s='bbb'
There's no difference. It helps you avoid explicit escapes, i. e.
>>> "What's up?"
"What's up?"
is a tad more readable than
>>> 'What\'s up'
"What's up"
Likewise, multiline strings are easier
Leam Hall wrote:
> On 09/08/2017 03:06 AM, Peter Otten wrote:
>> leam hall wrote:
>>
>>> On Thu, Sep 7, 2017 at 8:16 AM, Steve D'Aprano
>>> wrote:
>>>
>>>> On Thu, 7 Sep 2017 07:20 pm, Leam Hall wrote:
>>>>
>>>&
Leam Hall wrote:
> I do not understand your last sentence about reference cycle.
Currently you have
- create Career instance which stores character as an attribute
- make modifications to character
- forget about Career instance
My suggestion
- create Career instance which stores character as
Tim Chase wrote:
> Looking through docs, I was unable to tease out whether there's a
> prescribed behavior for the results of defining a dictionary with the
> same keys multiple times
>
> d = {
> "a": 0,
> "a": 1,
> "a": 2,
> }
>
> In my limited testing, it appears to alwa
Stefan Ram wrote:
> Michael Torrie writes:
>>On 09/15/2017 12:04 PM, Stefan Ram wrote:
>>>writes some complex queries to the table, what can be expected
>>^^
>>How do you plan to code these queries?
>
> I did a quick prototype. I am aware that the code
>
Leam Hall wrote:
> On 09/17/2017 08:30 AM, Chris Angelico wrote:
>> On Sun, Sep 17, 2017 at 9:38 PM, Leam Hall wrote:
>>> Still trying to keep this Py2 and Py3 compatible.
>>>
>>> The Py2 error is:
>>> UnicodeEncodeError: 'ascii' codec can't encode character
>>> u'\xf6' in posit
leam hall wrote:
> Doesn't seem to work. The failing code takes the strings as is from the
> database. it will occasionally fail when a name comes up that uses
> a non-ascii character.
Your problem in nuce: the Python 2 __str__() method must not return unicode.
>>> class Character:
... def _
Bill wrote:
> Robin Becker wrote:
>> On 16/09/2017 01:58, Steve D'Aprano wrote:
>>
>>>
>>> If you want to test for None specifically:
>>>
>>> if any(v is None for v in values):
>>> print "at least one value was None"
>>>
>> ...
>>
>> for some reason that seems slow on my machine
zljubi...@gmail.com wrote:
> I have sliced the pandas dataframe
>
> end_date = df[-1:]['end']
>
> type(end_date)
> Out[4]: pandas.core.series.Series
>
> end_date
> Out[3]:
> 48173 2017-09-20 04:47:59
> Name: end, dtype: datetime64[ns]
>
> 1.How to get rid of index value 48173 and get onl
Exposito, Pedro (RIS-MDW) wrote:
> This code does a "where" clause on a panda data frame...
>
> Code:
> import pandas as pd;
> col_names = ['Name', 'Age', 'Weight', "Education"];
> # create panda dataframe
> x = pd.read_csv('test.dat', sep='|', header=None, names = col_names);
> #
Pavol Lisy wrote:
> pandas is one of reasons why python is so popular these days. But
> "there is only milion way how to do it" (and other unpythonic issues)
> I see there every time I am looking at it. :)
Yeah, such a useful tool with such a byzantine API, completely at odds with
the zen -- I w
validationma...@gmail.com wrote:
> i have a code in python to search and replace what i need though is to
> replace the first say 10 instances of the number 1 with 2 and the second
> 10 instances with the number 3. anybody knows how to do that?
>
> fin = open(r'F:\1\xxx.txt')
> fout = open(r'F:\1
Peter Otten wrote:
> validationma...@gmail.com wrote:
>
>> i have a code in python to search and replace what i need though is to
>> replace the first say 10 instances of the number 1 with 2 and the second
>> 10 instances with the number 3. anybody knows how to do that?
Steve D'Aprano wrote:
> Is there a way to log when the garbage collector finds and collects a
> reference cycle?
>
> I don't care about objects claimed by the reference counter, I only care
> about cycles.
I don't know, and I don't think so. Would a structure like
a --- b --- c
| | |
d
john polo wrote:
> Python List,
>
> I am trying to make practice data for plotting purposes. I am using
> Python 3.6. The instructions I have are
>
> import matplotlib.pyplot as plt
> import math
> import numpy as np
> t = np.arange(0, 2.5, 0.1)
> y1 = map(math.sin, math.pi*t)
> plt.plot(t,y1)
>
Kryptxy via Python-list wrote:
> Sent with [ProtonMail](https://protonmail.com) Secure Email.
>
>> Original Message
>> Subject: Re: Running a GUI program haults the calling program (linux)
>> Local Time: 26 September 2017 12:09 PM
>> UTC Time: 26 September 2017 06:39
>> From: c.
Stefan Ram wrote:
> Here's a console transcript:
>
> |>>> from math import sin
> |>>> help( sin )
> |Help on built-in function sin in module math:
> |
> |sin(...)
> |sin(x)
> |
> |Return the sine of x (measured in radians).
> |
> |>>> sin( x = 2.0 )
> |Traceback (most recent call last):
Jerry Hill wrote:
> On Tue, Sep 26, 2017 at 12:32 PM, Peter Otten <__pete...@web.de> wrote:
>> Newer Python versions will show
>>
>> Help on built-in function sin in module math:
>>
>> sin(x, /)
>> Return the sine of x (measured in radians).
>
Bernie Connors wrote:
> On Tuesday, September 26, 2017 at 12:32:18 PM UTC-3, Bernie Connors wrote:
>> Hello,
>>
>> My first post here on C.L.P. I have only written a few python
>> scripts in 2.7 and now I'm trying my first python 3 script. Can
>> you tell me why this snippet w
Stefan Ram wrote:
> Why do we newbies write »print 2«? Here's another hint.
> This is an original transcript of what happened to me today:
>
> |>>> import( operator )
> | File "", line 1
> |import( operator )
> | ^
> |SyntaxError: invalid syntax
> |
> |>>> import operator
> |
>
Bill wrote:
> Ever since I download the MyCharm IDE a few days ago, I've been noticing
> all sort of "spacing conventions (from PEP) that are suggested. How do
> folks regard these in general?
>
> For instance, the conventions suggest that
>
> if x>y :
> pass
>
> should be written
> if
Matt Wheeler wrote:
> With deepest apologies to all involved...
>
> On Tue, 26 Sep 2017 at 08:42 Gregory Ewing
> wrote:
>
>> Ben Bacarisse wrote:
>> > Think functional! This is 257 characters:
>>
>> 250 chars, 17 shorter than the text it produces:
>>
>> a=[];o=[];n=[];A=list.append
>> for b in
Steve D'Aprano wrote:
> In the standard library's contextlib.py module, there is a class for
> redirecting standard I/O streams, and two public functions. The code is
> short enough to reproduce here:
>
> # From Python 3.5
>
> class _RedirectStream:
> _stream = None
> def __init__(self,
Daniel Bastos wrote:
> def make_sequence_non_recursive(N, x0 = 2, c = -1):
> "What's wrong with this function? It's very slow."
> last = x0
> def sequence():
> nonlocal last
> next = last
> last = last**2 + c
> return next % N
> return sequence
>
> It crawls pretty soon.
bartc wrote:
> On 02/10/2017 08:41, Peter Otten wrote:
>> Daniel Bastos wrote:
>>
>>> def make_sequence_non_recursive(N, x0 = 2, c = -1):
>>>"What's wrong with this function? It's very slow."
>>>last = x0
>>>de
Neal Becker wrote:
> In the following code (python3):
>
> for rb in filter (lambda b : b in some_seq, seq):
> ... some code that might modify some_seq
>
> I'm assuming that the test 'b in some_seq' is applied late, at the start
> of each iteration (but it doesn't seem to be working that way in
Stefan Ram wrote:
> Is this the best way to write a "loop and a half" in Python?
>
> x = 1
> while x:
> x = int( input( "Number (enter 0 to terminate)? " ))
> if x:
> print( f'Square = { x**2 }' )
>
> In a C-like language, one could write:
>
> while x = int( input( "Number (
Stefan Ram wrote:
> bartc writes:
>>Note that your reverse-indentation style is confusing!
>
> In Python, indentation can be significant.
>
> Sometimes, some lines in Python must be indented by 0.
Are there any editors that do not support a dedent operation?
In the interactive interpreter
Stefan Ram wrote:
> "ROGER GRAYDON CHRISTMAN" writes:
>>On Wed, Oct 4, 2017 22:42 Stefan Ram (r...@zedat.fu-berlin.de) wrote:
>>Steve D'Aprano writes:
So, "bottom-up" in this case means: iterators should be
taught before for-loops.
Why?
>>The easy answer here is to not use the range
;
> --
> $ cd sample-namespace-packages/native/pkg_a/
> $ python3 setup.py install
Are you sure you are using the correct interpreter? When I activate a
virtual environment it changes the prompt like so:
$ python3 -m venv venv
$ . venv/bin/
Thomas Nyberg wrote:
> Hello,
>
> I'm trying to understand native namespaces. I'm currently using python
> 3.5 as packaged in debian 9. I've been following the instructions here:
>
> https://packaging.python.org/guides/packaging-namespace-packages/#native-namespace-packages
>
> Those instructio
Chris Angelico wrote:
> On Fri, Oct 6, 2017 at 4:14 PM, Gregory Ewing
> wrote:
>> Steve D'Aprano wrote:
>>>
>>> Plus the downtime and labour needed to install the memory, if the
>>> computer will even take it.
>>
>>
>> Obviously we need an architecture that supports hot-swappable
>> robot-install
John Black wrote:
> I want sep="" to be the default without having to specify it every time I
> call print. Is that possible?
No, but you can replace the print function with your own:
>>> print = functools.partial(print, sep="")
>>> print("I", "recommend", "you", "choose", "another", "name", "a
Sayth Renshaw wrote:
> Thanks. Updated the script. But shouldn't it create the file if it doesn't
> exist? Which none of them will.
> pathlib.PurePath(r'C:\Users\Sayth\Projects\results', file_name)
> with open(result_path, 'a') as f:
> f.write(data)
> ##Output
> File
Stefan Ram wrote:
> Which advice do you refer to?
Teach the parts that are most useful first, i. e. for loops over anything
but range rather than while loops.
--
https://mail.python.org/mailman/listinfo/python-list
Andrew Z wrote:
> Hello,
>
> apparently my reading comprehension is nose diving these days. After
> reading python cookbook and a few other tutorials i still can't get a
> simple logging from a few files to work.
> I suspected my file organization - all files are in the same directory,
> causing
Andrew Z wrote:
> Hello,
> pos = {"CLown":10,"BArbie":20}
> I want to return integer (10) for the keyword that starts with "CL"
>
>
> cl_ = [v for k, v in pos.items() if k.startswith('CL')]
> cl_pos = cl_[0]
> if cl_pos > 0:
>
>blah..
>
>
> There are 2 issues with the above:
> a. ugly -
bartc wrote:
> On 16/10/2017 16:58, Stefan Ram wrote:
>> Xue Feng writes:
>>> I wonder why 'del' is not a function or method.
>>
>>Assume,
>>
>> x = 2.
>>
>>When a function »f« is called with the argument »x«,
>>this is written as
>>
>> f( x )
>>
>>. The function never gets t
Stefan Ram wrote:
> Peter Otten <__pete...@web.de> writes:
>>team.pop(2)
>>Stefan's explanation may work for
>>del x
>>if you discard
>>x = None # get rid of the huge object that x was bound to before
>>as a hack
>
> »x = None« observabl
Daniel Flick wrote:
> I am very new to Python and have been struggling to find some info on
> processing IP addresses.
>
> get_network returns 192.168.1.128/25 but I need 192.168.1.128 only. I can
> do this with netaddr but I am working with Mako templates and ipaddress is
> a built in module so
Daniel Flick wrote:
> On Tuesday, October 17, 2017 at 4:25:02 PM UTC-5, Daniel Flick wrote:
>>
>> Peter, I am not following. Are you saying that there is a function that
>> returns the network only? network_address was giving me the mask
>> attached to the end but
jf...@ms4.hinet.net wrote:
> In last few days, I tried to experiment with the scrolling table
> implemented in canvas, started from this example:
> http://code.activestate.com/recipes/580793-tkinter-table-with-scrollbars/.
> Everything works fine until I moved the scrolling_area instance (which th
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