Re: [Tutor] Which is better in principle: to store (in file) calculated data or to re-calculate it upon restarting program?

On Tue, Jul 30, 2019 at 11:24 AM boB Stepp wrote: > In this trivial example I cannot imagine there is any realistic > difference between the two approaches, but I am trying to generalize > my thoughts for potentially much more expensive calculations, very > large data sets, and what is the

Re: [Tutor] Trouble Downloading To MacOS Mojave 10.14.3 released mid 2014

On Wed, Mar 13, 2019 at 7:06 AM Robert Landers wrote: > Hello Tutor, Hi Robert, and welcome! > I am having trouble finding a python 3.7.2 download for my MacOS Mojave > 10.14.3 released mid 2014. If you go to https://www.python.org/downloads/, the large yellow "Download Python ..." button near

Re: [Tutor] Displaying Status on the Command Line

On Thu, Nov 8, 2018 at 10:10 AM Steven D'Aprano wrote: > Sorry, I don't understand that. Maybe its too early in the morning for > my brain, but given that you've imported the Python 3 print function > from the __future__ why do you need the customer wrapper? > > from __future__ import

Re: [Tutor] Displaying Status on the Command Line

On Thu, Nov 8, 2018 at 4:12 AM Chip Wachob wrote: > I should have mentioned that I'm working with Python 2, but I think I > can parse my way through these examples. You can use any of the `print` function tricks above in Python 2 with the following boilerplate: from __future__ import

Re: [Tutor] Displaying Status on the Command Line

On Wed, Nov 7, 2018 at 1:17 PM Alan Gauld via Tutor wrote: > In Python 3 there are parameters to print() > > while someProcess(): >time.sleep(1) >print('.', end='', sep='') # no newline and no spaces You'll also want `flush=True` here to avoid having your dots buffered until

Re: [Tutor] SSL Error

On Tue, Jul 31, 2018 at 12:06 PM Alan Gauld via Tutor wrote: > > On 31/07/18 03:52, Saket Mehrotra wrote: > > > error ssl.PROTOCOL_SSLv23: OpenSSL.SSL.SSLv23_METHOD, > > AttributeError: module 'ssl' has no attribute 'PROTOCOL_SSLv23' > > Are you sure you spelled the attribute correctly? > > Have

Re: [Tutor] Dictionary viceversa

On Mon, Jul 30, 2018 at 1:08 PM Alan Gauld via Tutor wrote: > There are lots of options including those suggested elsewhere. > Another involves using get() which makes your function > look like: > > def viceversa(d): > new_d = dict() > for k in d: > for e in d[k]: >

Re: [Tutor] Dictionary viceversa

On Mon, Jul 30, 2018 at 12:20 PM Valerio Pachera wrote: > I was looking to substiture the cicle for e in new_d like this: > [ new_d[e].append(k) if e in new_d else new_d[e].append(k) for e in d[k] ] > but it can't work because 'new_d[e] = []' is missing. Have a look at `dict.setdefault` and

Re: [Tutor] pip stopped working gives error

On Thu, May 3, 2018 at 2:10 PM, Jim wrote: > I have python 3.6 installed in a virtual environment on Mint 18. Today I > wanted to use pip and got this error when I tried to use it. > > (env36) jfb@jims-mint18 ~ $ pip help > Traceback (most recent call last): > File

Re: [Tutor] Sam Kahraman Campus Middle School Advice

Hi Sam, On Thu, Apr 26, 2018 at 3:00 PM, Kahraman, Sam K. wrote: > Hello, > > I am a 8th grade student at Campus Middle School. We have a project on > coding and I need a expert to interview. Currently I'm learning Python and > thought I should ask someone

Re: [Tutor] about tree input

On Mon, Apr 23, 2018 at 11:28 AM, 劉權陞 <01patrick...@gmail.com> wrote: > I still have no idea about how to write the code. Can you make a > demonstration? Something like this: def set(tree, path, key, value): for p in path: tree = tree[p] tree[key] = value -- Zach

Re: [Tutor] about tree input

Basically what you want to do here is give Tree a local name (d), loop through T reassigning d to d[k_from_T], and then d[k] = v after the loop. T can be arbitraily long, and Tree can actually be and contain any indexable type. If this pointer isn't enough to send you in the right direction, I'll

Re: [Tutor] Using the Nimblenet Library in Python 3.6

On Thu, Apr 5, 2018 at 3:39 AM, Alan Gauld via Tutor wrote: > On 05/04/18 04:02, Mark Lawrence wrote: > >> Python 3.6 has more functionality than 2.7 by definition, but your >> comment implies, at least to me, that 2.7 and 3.6 are chalk and cheese. >> Nothing could be further

Re: [Tutor] question about metaclasses

On Wed, Jan 10, 2018 at 10:08 AM, Albert-Jan Roskam wrote: > Hi, > > > In another thread on this list I was reminded of types.SimpleNamespace. This > is nice, but I wanted to create a bag class with constants that are > read-only. My main question is about example #3

Re: [Tutor] Python

On Thu, Nov 30, 2017 at 2:20 AM, Jeroen van de Ven wrote: > Hello, > Can you build these 4 programms for me? No, we will not do your homework for you. However, you can show us the code you've written, describe the problem you're having with it (including the

Re: [Tutor] (no subject)

Hi Howard, On Wed, Aug 16, 2017 at 5:36 PM, Howard Lawrence <1019sh...@gmail.com> wrote: > class Address: > def _init_(self,Hs,St,Town,Zip): Your issue is in this line, it should be `__init__` rather than `_init_` (that is, two underscores before and after "init"). Hope this helps, --

Re: [Tutor] How does len() compute length of a string in UTF-8, 16, and 32?

On Mon, Aug 7, 2017 at 9:44 PM, boB Stepp wrote: > py3: s = 'Hello!' > py3: len(s.encode("UTF-8")) > 6 > py3: len(s.encode("UTF-16")) > 14 > py3: len(s.encode("UTF-32")) > 28 > > How is len() getting these values? And I am sure it will turn out not > to be a coincidence

Re: [Tutor] if __name__=='main' vs entry points: What to teach new comers?

On Tue, Aug 1, 2017 at 9:54 AM, Thomas Güttler wrote: > I have a friend who is a talented shell script writer. He is a linux guru > since > several years. > > He asked me if "if __name__=='main':" is state of the art if you want > to translate a shell script to

Re: [Tutor] centos 7 - new setup.. weird python!

On Wed, Jul 19, 2017 at 3:48 PM, bruce wrote: > Hi. Hi Bruce, > > Testing setting up a new Cnntos7 instance. > > I ran python -v from the cmdline... and instantly got a bunch of the > following! Pretty sure this isn't correct. > > Anyone able to give pointers as to what

Re: [Tutor] Which DB use with standalone desktop app

On Thu, Jul 6, 2017 at 3:57 AM, Freedom Peacemaker wrote: > Hi Tutors, > I am working on standalone desktop app with tkinter GUI (Python3), and i > dont know which database should i use. I've tried to find solution on my > own but google cant help me. There are some with SQL

Re: [Tutor] Why use main() ?

On Wed, Jul 5, 2017 at 10:37 AM, David Rock wrote: > This is not a question about using if __name__ == '__main__':. I know > what the difference is between running the script or importing it and > using the value of __name__ to determine behavior. > > This is a question

Re: [Tutor] Coming from R, what's a good IDE editor? I've tried PyCharm and Spyder

On Fri, Jun 2, 2017 at 12:46 PM, C W wrote: > Dear Python list, > > I am an R user learning Python. What is a good editor? > > 1) Pycharm > PyCharm evaluates the entire script, I just want to change a few lines in > the script. > For example, > > import matplotlib.pyplot as plt

Re: [Tutor] reading files in Python 3

On Mar 30, 2017 15:07, "Rafael Knuth" wrote: I can read files like this (relative path): with open("Testfile_B.txt") as file_object: contents = file_object.read() print(contents) But how do I read files if I want to specify the location (absolute path):

Re: [Tutor] How to access an instance variable of a superclass from an instance of the subclass?

On Wed, Feb 22, 2017 at 10:25 PM, boB Stepp wrote: > I am trying to wrap my head around the mechanics of inheritance in > Python 3. I thought that all attributes of a superclass were > accessible to an instance of a subclass. > > Obviously I am horribly misunderstanding

Re: [Tutor] Test for type(object) == ???

On Fri, Feb 10, 2017 at 7:34 PM, boB Stepp wrote: > So my question is why does "type(5)" result in "", but > the correct Boolean test is "type(5) == int"? I suspect it has > something to do with the built-in attributes of Python objects that I > currently know so very

Re: [Tutor] Multiple tabs using tkinter

On Tue, Feb 7, 2017 at 12:59 PM, Alan Gauld via Tutor <tutor@python.org> wrote: > On 07/02/17 16:41, Zachary Ware wrote: > >> Full disclosure, I've never actually used Tix beyond making it build >> with the rest of CPython on Windows and making sure it actually work

Re: [Tutor] Multiple tabs using tkinter

On Mon, Feb 6, 2017 at 7:31 PM, Alan Gauld via Tutor wrote: > On 06/02/17 16:40, Pooja Bhalode wrote: > >> I was wondering if someone could help me regarding multiple tabs in >> tkinter. > > Look at the tabbed notebook in the Tix module. > It should do what you want. ttk rather

Re: [Tutor] overriding brackets in lvalue assignment possible?

On Tue, Dec 27, 2016 at 10:48 AM, James Hartley wrote: > I can successfully override __getitem__() for rvalues, but the following > example shows that more is required when used as an lvalue: > > ===8<- > #!/usr/bin/env python > > class Foo(): > def __init__(self, n):

Re: [Tutor] Python 3.x and Sqlite3

Hi Greg, On Tue, Oct 11, 2016 at 3:54 PM, Greg Schmit wrote: > On FreeBSD I built lang/python34 from source and when I run python 3.4 I > cannot import sqlite3. I thought it was being packaged with python 3.4. Am I > incorrect in this assumption? This is more the kind of

Re: [Tutor] pytsk

Hi Peter, On Fri, Apr 29, 2016 at 8:15 AM, Tees, Peter (EthosEnergy) wrote: > Hi folks > > I'm pretty new to Python and programming, I've done the first four modules of > the Python course at Coursera.org to get started > > Now I want to put what I've learned to

Re: [Tutor] asyncio or threading

My apologies for taking so long to reply here again, it's been a busy couple of weeks. On Mon, Feb 15, 2016 at 7:18 PM, Alan Gauld <alan.ga...@btinternet.com> wrote: > On 15/02/16 21:08, Zachary Ware wrote: >> This is not all asyncio can do. Callbacks are only one way of using i

Re: [Tutor] asyncio or threading

On Feb 15, 2016 1:25 PM, "Alan Gauld" wrote: > > On 15/02/16 13:09, CMG Thrissur wrote: > > > I just wanted an opinion on the subject, asyncio and threading both seam > > to do the same job, but i feel threading is better because of the > > multiple ways i can control

Re: [Tutor] asyncio or threading

On Feb 15, 2016 1:12 PM, "CMG Thrissur" wrote: > > Hello, > > I just wanted an opinion on the subject, asyncio and threading both seam to do the same job, but i feel threading is better because of the multiple ways i can control it. > > Just want get the groups opinion based

Re: [Tutor] Missing Standard Libraries on Python 3.5 for Mac

Hi Andrew, On Tue, Nov 3, 2015 at 11:20 AM, Andrew Machen wrote: > Hi, > > I am new to Python, and I am trying to use a Python Standard Library, namely > ‘unicodedata’, however it appears to be missing (others are also missing) > from the built-in libraries that come

Re: [Tutor] Messy - Very Messy string manipulation.

On Wed, Oct 28, 2015 at 10:09 AM, Vusa Moyo wrote: > Hi Guys, > > I've written a script to remove vowels from a string/sentence. > > the while loop I'm using below is to take care of duplicate vowels found in > a sentence, ie > > anti_vowel('The cow moos louder than the frog') >

Re: [Tutor] Messy - Very Messy string manipulation.

On Wed, Oct 28, 2015 at 11:09 AM, Zachary Ware <zachary.ware+py...@gmail.com> wrote: >assert remove_vowels('Did It work? Looks like.') == 'Dd t wrk? Lks Lke.' Of course I typo'd here (that's what you get for not testing!): there should be no final 'e' and the last 'L' should be l

Re: [Tutor] Messy - Very Messy string manipulation.

On Wed, Oct 28, 2015 at 11:09 AM, Zachary Ware <zachary.ware+py...@gmail.com> wrote: >return ''.join(c for c in text if c not in vowels Looking again, I see I typo'd here too. There should of course be a ')' at the end. -- Zach

Re: [Tutor] Working collaboratively (was: accessing modules found throughout a package?)

On Mon, Oct 19, 2015 at 2:53 PM, Alex Kleider wrote: > On 2015-10-19 12:37, Ben Finney wrote: >> Work >> with other Python programmers on a common code base, and watch your >> skills broaden and improve! > > > How I wish I could find such collaborator! > Are there any "starter

Re: [Tutor] Type Error

On Mon, Sep 14, 2015 at 9:29 AM, richard kappler wrote: > everything works except the os.remove(file) which gives the following error: > > Traceback (most recent call last): > File "DataFeedBatch.py", line 104, in > os.remove(file) > TypeError: coercing to Unicode:

Re: [Tutor] How should my code handle db connections? Should my db manager module use OOP?

On Aug 26, 2015 9:03 PM, Steven D'Aprano st...@pearwood.info wrote: - If your database lives on a NTFS partition, which is very common for Linux/Unix users snip these issues, especially on Linux when using NTFS. Surely you mean NFS, as in Network FileSystem, rather than NTFS as in New

Re: [Tutor] Is it possible to archive subsets of data from an SQLite db and restore it later?

On Mon, Aug 17, 2015 at 10:44 PM, boB Stepp robertvst...@gmail.com wrote: My wife had an interesting request tonight: Would it be possible to have two dbs, one that is the current working db, and the other an archival db for students who have left the school? If yes, then the archival db

Re: [Tutor] Does composition only work with particular instances of objects?

On Thu, Aug 13, 2015 at 11:31 PM, boB Stepp robertvst...@gmail.com wrote: I was looking at an example illustrating composition from the book, Introducing Python by Bill Lubanovic on p. 140: class Bill: def __init__(self, description): self.description = description

[Tutor] _ vs. _name vs. __name vs. name_ vs. __name__ usages

On Saturday, July 25, 2015, boB Stepp robertvst...@gmail.com javascript:_e(%7B%7D,'cvml','robertvst...@gmail.com'); wrote: 5) __name__ is meant to be used only by the creators of Python for their special built-in methods, such as __init__, __new__, etc. Everything up to this point was pretty

Re: [Tutor] How to get a Tkinter window to print a color copy of itself as a .pdf file?

On Apr 15, 2015 9:38 AM, boB Stepp robertvst...@gmail.com wrote: Perhaps I am being foolish! But I do have my reasons, which, in this case, is I wanted to take advantage of the pack and grid geometry managers. These two tools seem to make the positioning of the widgets much easier. Unless I am

Re: [Tutor] How to get a Tkinter window to print a color copy of itself as a .pdf file?

On Apr 15, 2015 9:59 AM, boB Stepp robertvst...@gmail.com wrote: On Wed, Apr 15, 2015 at 8:50 AM, Zachary Ware zachary.ware+py...@gmail.com wrote: On Apr 15, 2015 9:38 AM, boB Stepp robertvst...@gmail.com wrote: Perhaps I am being foolish! But I do have my reasons, which, in this case

Re: [Tutor] annoying directory structure

On Thu, Apr 9, 2015 at 10:07 PM, Jim Mooney cybervigila...@gmail.com wrote: [Previously, I wrote:] I'll need to see some actual code (namely, where and how you used os.walk) to have any real idea of what's going on. The online docs for os.walk have a pretty good explanation and example. This

Re: [Tutor] annoying directory structure

On Thu, Apr 9, 2015 at 2:02 PM, Jim Mooney cybervigila...@gmail.com wrote: The safest method would probably be to do `pip freeze requirements.txt`, copy the requirements.txt file to the new machine, and run `pip install -r requirements.txt --Zach I looked at pip3 help (windows) and don't see

Re: [Tutor] migrating python to a new machine

On Apr 8, 2015 3:39 AM, Jim Mooney cybervigila...@gmail.com wrote: General question. I'm thinking of moving to a new machine although I hate to abandon trusty XP. Will I have to reinstall all my pip installed modules or can I just copy the site-packages directory? And if so, is anything else

Re: [Tutor] Unexpected results using enumerate() and .split()

On Tue, Mar 31, 2015 at 3:23 PM, boB Stepp robertvst...@gmail.com wrote: The following behavior has me stumped: Python 2.7.8 (default, Jun 30 2014, 16:03:49) [MSC v.1500 32 bit (Intel)] on win32 Type copyright, credits or license() for more information. L = ['#ROI:roi_0', '#TXT:text_0',

Re: [Tutor] Unexpected results using enumerate() and .split()

On Tue, Mar 31, 2015 at 3:37 PM, boB Stepp robertvst...@gmail.com wrote: On Tue, Mar 31, 2015 at 3:28 PM, Zachary Ware zachary.ware+py...@gmail.com wrote: On Tue, Mar 31, 2015 at 3:23 PM, boB Stepp robertvst...@gmail.com wrote: The following behavior has me stumped: Python 2.7.8 (default

Re: [Tutor] file exists question

On Mar 9, 2015 7:25 PM, Steven D'Aprano st...@pearwood.info wrote: What I really want is an option to open() that only opens a new file, and fails if the file already exists. If I'm not mistaken, this is the 'x' open mode, added in Python 3.4 (or maybe 3.3, I forget). -- Zach

Re: [Tutor] Python 3 simple socket issue

On Wed, Feb 18, 2015 at 9:48 AM, Juan C. juan0christ...@gmail.com wrote: h1We\'re sorry.../h1p... but your computer or network may be sending automated queries. To protect our users, we can\'t process your request right now./p/divdiv style=margin-left: 4em;See a href=

Re: [Tutor] How to easily recover the current index when using Python-style for loops?

On Thu, Feb 5, 2015 at 11:30 AM, boB Stepp robertvst...@gmail.com wrote: Python 2.4.4, Solaris 10. a_list = [item1, item2, item3] for item in a_list: print 'Item number', ???, 'is:', item Is there an easy, clever, Pythonic way (other than setting up a counter) to replace ??? with the

Re: [Tutor] Why is an instance smaller than the sum of its components?

On Tue, Feb 3, 2015 at 3:59 PM, Emile van Sebille em...@fenx.com wrote: On 2/3/2015 1:12 PM, Jugurtha Hadjar wrote: 2 - Why are foo() and bar() the same size, even with bar()'s 4 integers? neither foo() nor bar() return anything explicitly, so both return the default none This is not

[Tutor] How to change default path output of 'logging'?

On Monday, December 22, 2014, Juan Christian juan0christ...@gmail.com javascript:_e(%7B%7D,'cvml','juan0christ...@gmail.com'); wrote: I have a 'logging' on my code using: import logging ... logging.basicConfig(filename=bumpr.log, level=logging.INFO) ... The thing is that the default

Re: [Tutor] Philosophical question about string slicing from end of a string

On Mon, Nov 24, 2014 at 12:32 PM, boB Stepp robertvst...@gmail.com wrote: Python 2.7.8 Win7Pro str = 0123456789 str[-1] '9' str[-3:-1] '78' str[-3:] '789' I understand that the above is the way it is in Python, but I am puzzled why the designers did not choose that str[-3:-1] returns

Re: [Tutor] Philosophical question about string slicing from end of a string

On Mon, Nov 24, 2014 at 1:06 PM, boB Stepp robertvst...@gmail.com wrote: On Mon, Nov 24, 2014 at 12:57 PM, Zachary Ware zachary.ware+py...@gmail.com wrote: [...] Have I clarified or muddied it for you? :) Clarified, I believe, if my following statements are correct: I did not consider

Re: [Tutor] ran into a problem with pip install

On Mon, Nov 24, 2014 at 10:28 PM, Clayton Kirkwood c...@godblessthe.us wrote: I was trying to pip install beautifulsoup and ran into the following error. It appears to be 2.x because of the print. Your diagnosis is correct, beautifulsoup 3.2.1 is written for Python 2. I am installing to a

[Tutor] Fwd: Installing both Python 2.7 and Python 3.4 on Windows 7 Pro 64-bit: Install Python 2.7 FIRST!

Forwarding my original to the list, as I failed earlier On Fri, Oct 10, 2014 at 11:34 PM, boB Stepp robertvst...@gmail.com wrote: I can live with 2.7.8 being the default Python, but if I wanted to make 3.4.2 the default, how would I go about doing it? Check the output of ftype Python.File, it

Re: [Tutor] Installing both Python 2.7 and Python 3.4 on Windows 7 Pro 64-bit: Install Python 2.7 FIRST!

On Sat, Oct 11, 2014 at 12:30 AM, boB Stepp robertvst...@gmail.com wrote: On Sat, Oct 11, 2014 at 12:24 AM, boB Stepp robertvst...@gmail.com wrote: Cannot locate either of the mentioned py.ini files. I did a search for these on my PC and came up empty. I am going to try to create my own py.ini

Re: [Tutor] New to Python - print function - invalid syntax

On Tue, Aug 5, 2014 at 9:56 AM, Marc Tompkins marc.tompk...@gmail.com wrote: On Tue, Aug 5, 2014 at 12:48 AM, Maxime Steisel maximestei...@gmail.com wrote: I think this is because on windows, *.py files are associated with py.exe that choose the python version depending on the first line of

Re: [Tutor] conditional execution

Hi Patti, On Tue, Apr 1, 2014 at 11:07 AM, Patti Scott pscott...@yahoo.com wrote: I've been cheating: comment out the conditional statement and adjust the indents. But, how do I make my program run with if __name__ == 'main': main() at the end? I thought I understood the idea to run a module

Re: [Tutor] how do i delete the questions that i asked and it has been shared in web

On Wed, Mar 12, 2014 at 12:46 PM, S Tareq stare...@yahoo.com wrote: this one http://code.activestate.com/lists/python-tutor/99408/ and there are other ones as well This is a mailing list. Once an email is sent, you can't unsend it. -- Zach ___

Re: [Tutor] Regular expression - I

Hi Santosh, On Tue, Feb 18, 2014 at 9:52 AM, Santosh Kumar rhce@gmail.com wrote: Hi All, If you notice the below example, case I is working as expected. Case I: In [41]: string = H*testH* In [42]: re.match('H\*',string).group() Out[42]: 'H*' But why is the raw string 'r' not

Re: [Tutor] Regular expression - I

On Tue, Feb 18, 2014 at 11:39 AM, Zachary Ware zachary.ware+py...@gmail.com wrote: snip 'H\*' 'H\*' The equivalent raw string is exactly the same in this case: r'H\*' 'H\*' Oops, I mistyped both of these. The repr should be 'H\\*' in both cases. Sorry for the confusion

Re: [Tutor] could please convert this code to 3.X by using 2to3

On Tue, Feb 18, 2014 at 12:18 PM, S Tareq stare...@yahoo.com wrote: i am to convert coding to python 3.X. and some one told me to use 2to3 program but i don't how to use 2to3 program i was reading and followed the rules in python website (

Re: [Tutor] Beginner - explaining 'Flip a coin' bug

Hi Marc, On Wed, Feb 12, 2014 at 9:25 AM, Marc Eymard marc_eym...@hotmail.com wrote: Hello there, I want to emulate a coin flip and count how many heads and tails when flipping it a hundred times. I first coded coinflip_WRONG.py with count_flips += 1 statement within the if/else block.

Re: [Tutor] subtyping builtin type

On Tue, Dec 31, 2013 at 8:35 AM, spir denis.s...@gmail.com wrote: Hello, I don't remember exactly how to do that. As an example: class Source (str): __slots__ = ['i', 'n'] def __init__ (self, string): self.i = 0 # current matching index in source

Re: [Tutor] subtyping builtin type

On Tue, Dec 31, 2013 at 9:22 AM, spir denis.s...@gmail.com wrote: Thank you, Oscar Zachary. I guess thus the way it is done is correct (for my case), is it? Seems your last remark shows the source of my confusion: probably, in past times, I subtyped builtin types and overrided their __new__,

Re: [Tutor] subtyping builtin type

On Tue, Dec 31, 2013 at 10:21 AM, Mark Lawrence breamore...@yahoo.co.uk wrote: The glossary entry for __slots__ states A declaration inside a class that saves memory by pre-declaring space for instance attributes and eliminating instance dictionaries. Though popular, the technique is somewhat

Re: [Tutor] subtyping builtin type

On Tue, Dec 31, 2013 at 11:53 AM, eryksun eryk...@gmail.com wrote: Minor correction: It says str requires empty __slots__, but that's a bug in the docs. It's referring to 2.x str. Else this thread wouldn't exist. In 3.x, str is basically the unicode type from 2.x. Its __itemsize__ is 0

Re: [Tutor] Built In Functions

On Tue, Dec 17, 2013 at 10:37 AM, Wolfgang Maier wolfgang.ma...@biologie.uni-freiburg.de wrote: Peter Otten __peter__ at web.de writes: Look at this line: if __name__ == __main__: do so very closely :) In monospaced font :) Took me forever to see it, thanks Gmail... -- Zach

Re: [Tutor] unstring

Jim Mooney cybervigila...@gmail.com wrote: Is there a way to unstring something? That is str(object) will give me a string, but what if I want the original object back, for some purpose, without a lot of foofaraw? Only by keeping the original reference to the object. str(object) produces a new

Re: [Tutor] Issue with string method: str(variable ** n)

On Thu, May 16, 2013 at 1:58 PM, Rafael Knuth rafael.kn...@gmail.com wrote: Hej, Hi Rafael, I wrote a tiny little program which I was hoping would take a number as input, square and print it: square = input (Enter a number. ) print (str(square) + squared is + str(square ** 2)) It seems

Re: [Tutor] stumped by what looks like recursive list comprehension

On Sun, May 5, 2013 at 11:56 AM, Jim Mooney cybervigila...@gmail.com wrote: I looked up list comprehension after the last explanation and it's really cool. But the example below stumps me. I understand the second part, primes = but the first part, noprimes = baffles me since it swaps i and j

Re: [Tutor] exit message

On Sun, May 5, 2013 at 11:24 PM, Jim Mooney cybervigila...@gmail.com wrote: I've noticed that if you exit() a program you always get a traceback message: Traceback (most recent call last): File pyshell#1, line 1, in module exit('what now?') File C:\Python33\lib\site.py, line 380, in