🌐 Mailman 3 August 2022 - Python-list - python.org

>>> %matplotlib inline results in SyntaxError: invalid syntax
by Mike S Dec. 25, 2023

Dec. 25, 2023

I have installed Python 3.4.4 on XPSP3 and am trying to work my way through this tutorial. A Complete Tutorial on Ridge and Lasso Regression in Python http://www.analyticsvidhya.com/blog/2016/01/complete-tutorial-ridge-lasso-r… In Step 2 "Why Penalize the Magnitude of Coefficients?" we are shown this code: #Importing libraries. The same will be used throughout the article. import numpy as np import pandas as pd import random import matplotlib.pyplot as plt %matplotlib inline I get an error on the last line. I am running this code in Idle Python 3.4.4 Shell... Python 3.4.4 (v3.4.4:737efcadf5a6, Dec 20 2015, 19:28:18) [MSC v.1600 32 bit (Intel)] on win32 Type "copyright", "credits" or "license()" for more information. >>> import numpy as np >>> import pandas as pd >>> import random >>> import matplotlib.pyplot as plt >>> %matplotlib inline SyntaxError: invalid syntax What am I doing wrong? Suggested reading? TIA, Mike

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Re: How to add CC and BCC while sending mails using python
by akegb3＠gmail.com June 20, 2023

June 20, 2023

On Tuesday, September 30, 2008 8:00:16 AM UTC-8, Bernhard Walle wrote: > Hi, > > * cindy jones [2008-09-30 19:57]: > > > > Can someone tel me how to add cc's and bcc's while sending mails using > > python > > Following (tested) snippet should help: > > ------------------ 8< ------------------------------ > from smtplib import SMTP > from email.mime.image import MIMEImage > from email.mime.text import MIMEText > from email.mime.multipart import MIMEMultipart > > to = 'to_address(a)example.invalid' > cc = 'cc_address(a)example.invalid' > bcc = 'bcc_address(a)example.invalid' > > msg = MIMEMultipart() > msg['To'] = to > msg['Cc'] = cc > msg['From'] = 'bernhard(a)bwalle.de' > msg['Subject'] = 'Test' > text = MIMEText('Das ist ein Test') > text.add_header("Content-Disposition", "inline") > msg.attach(text) > > s = SMTP('test.smtp.relay') > s.sendmail(msg['From'], [to, cc, bcc], msg.as_string()) > s.quit() > ------------------ >8 ------------------------------ > > > Regards, > Bernhard Hello Bernhard, I've tried the above code and the bcc address does not receive the message, on the To & CC addresses receive it. Here are snippets from my code, perhaps something will stand out to you? to = 'ed(a)domain.gov' cc = 'ed(a)gmailmail.com' bcc = 'ed(a)home.net' msg = MIMEMultipart() msg['To'] = to msg['Cc'] = cc msg['Subject'] = 'My Subject text here' msg['From'] = 'edsboss(a)domain.gov' smtp = SMTP("smtpserver") smtp.ehlo() smtp.sendmail(msg['From'], [to, cc, bcc], msg.as_string()) Thanks in advance..hope you're still out there!! ~Ed

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on GNU EMACS's python-mode, loading entire buffer
by Meredith Montgomery Sept. 29, 2022

Sept. 29, 2022

Perhaps this isn't the right newsgroup, but I kinda feel I will find more GNU EMACS users running the native python-mode here than in GNU EMACS newsgroups. Not every GNU EMACS user cares about Python. (Right?) A sort of a complaint is that when I used to run GNU EMACS 24.3.1, I'd open a file.py and simply say C-c C-c and it would ask me if I wanted a dedicated process, load a REPL load my entire buffer. Now in 27.1, things are different. I say C-c C-c and it tells me to start the process with C-c C-p. I mean --- is that the most polite thing to do? I feel like it's telling me --- go send this buffer yourself! I also don't know how to start a dedicated process. (Sometimes I want two REPLs. You know, you can get never get enough.) I would bet all of this and more is available, but I don't even know which book to read. Would you point me in the right direction? I would also be interested in a command that restarts the REPL afresh and reloads my buffer --- sort of like keyboard's [F5] of the IDLE.

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When should I use "parent=None" in __ini__ and "parent" in super()
by Mohsen Owzar Sept. 2, 2022

Sept. 2, 2022

Hi Guys I'm writing since almost one-year codes in Python, using TKinter and PyQt5. I'm somehow able to writes GUIs in both of them. But since I'm using more Pyqt5 and using classes with initialization and super() constructs, and also I saw lots of videos and examples of coding them, I still don’t know exactly how and when should I use the parent in __init()__ and super() construct. For example, the following lines use "parent=None" in the __init__ construct and "parent" in the super() construct. And sometimes I do not see any of them in these two constructs. :::::::::::::::::::::::::::::::::::::::::::::::: class MyClass1(QWidget): def __init__(self, name, parent=None): super(MyClass1, self).__init__(parent) print(self.parent().test) :::::::::::::::::::::::::::::::::::::::::::::::: And sometimes without "parent" like the following: :::::::::::::::::::::::::::::::::::::::::::::::: class MyClass2(QWidget): def __init__(self, name): super(MyClass2, self).__init__() print(self.parent().test) :::::::::::::::::::::::::::::::::::::::::::::::: Could anyone explain this to me when and for which action I have to use the first one "MyClass1" and when the second one "MyClass2"? Regards Mohsen

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Re: How to make a variable's late binding crosses the module boundary?
by Jach Feng Sept. 1, 2022

Sept. 1, 2022

Chris Angelico 在 2022年8月29日星期一下午1:58:58 [UTC+8] 的信中寫道： > On Mon, 29 Aug 2022 at 15:54, Jach Feng <jf...(a)ms4.hinet.net> wrote: > > > > Richard Damon 在 2022年8月29日星期一上午10:47:08 [UTC+8] 的信中寫道： > > > On 8/27/22 7:42 AM, Mark Bourne wrote: > > > > Jach Feng wrote: > > > >> I have two files: test.py and test2.py > > > >> --test.py-- > > > >> x = 2 > > > >> def foo(): > > > >> print(x) > > > >> foo() > > > >> > > > >> x = 3 > > > >> foo() > > > >> > > > >> --test2.py-- > > > >> from test import * > > > >> x = 4 > > > >> foo() > > > >> > > > >> ----- > > > >> Run test.py under Winows8.1, I get the expected result: > > > >> e:\MyDocument>py test.py > > > >> 2 > > > >> 3 > > > >> > > > >> But when run test2.py, the result is not my expected 2,3,4:-( > > > >> e:\MyDocument>py test2.py > > > >> 2 > > > >> 3 > > > >> 3 > > > >> > > > >> What to do? > > > > > > > > `from test import *` does not link the names in `test2` to those in > > > > `test`. It just binds objects bound to names in `test` to the same > > > > names in `test2`. A bit like doing: > > > > > > > > import test > > > > x = test.x > > > > foo = test.foo > > > > del test > > > > > > > > Subsequently assigning a different object to `x` in one module does > > > > not affect the object assigned to `x` in the other module. So `x = 4` > > > > in `test2.py` does not affect the object assigned to `x` in `test.py` > > > > - that's still `3`. If you want to do that, you need to import `test` > > > > and assign to `test.x`, for example: > > > > > > > > import test > > > > test.x = 4 > > > > test.foo() > > > > > > > Yes, fundamental issue is that the statement > > > > > > from x import y > > > > > > makes a binding in this module to the object CURRECTLY bound to x.y to > > > the name y, but if x.y gets rebound, this module does not track the changes. > > > > > > You can mutate the object x.y and see the changes, but not rebind it. > > > > > > If you need to see rebindings, you can't use the "from x import y" form, > > > or at a minimum do it as: > > > > > > > > > import x > > > > > > from x import y > > > > > > then later to get rebindings to x.y do a > > > > > > y = x.y > > > > > > to rebind to the current x.y object. > > > > > > -- > > > Richard Damon > > Yes, an extra "import x" will solve my problem too! Sometimes I am wondering why "from x import y" hides x? hum...can't figure out the reason:-) > > > "from x import y" doesn't hide x - it just grabs y. Python does what > you tell it to. :) > > ChrisA But I had heard people say that "from x import y" did import the whole x module into memory, just as "import x" did, not "grabs y" only. Is this correct? --Jach

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Download Python 3.10.6 for windows
by George Rwaga Aug. 31, 2022

Aug. 31, 2022

I last installed an updated version of python more than a year back. I am trying to download (from https://www.python.org/downloads/ ) and install Python 3.10.6 for Windows - but I keep running into problems. 1. I installed Python 3.10.6 in the default directory C:\Users\xxxxx.xxxxx\AppData\local\programs\Python\Python310 After the installation, there was no shortcut on my desktop. I thought I would just go to Python310 and create a shortcut. But I am unable to find AppData. 2. I then decided to install Python3.10.6 in a customized directory C:\program files\Python\Python310 I am being asked to verify access to this directly. I went to properties, made what I thought were the relevant changes. But I keep getting asked to verify access. My R and RStudio are installed in C:\program files. How should I proceed? George --

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Re: Coffee
by Michael F. Stemper Aug. 31, 2022

Aug. 31, 2022

On 29/08/2022 07.16, Stefan Ram wrote: > |Python's obviously a great tool for all kinds of programming things, > |and I would say if you're only gonna use one programming > |language in your live, Python will probably the right one. > Brian Kernighan > > I transcribed this from the recent video > "Coffee with Brian Kernighan". For those who'd like to see the whole chat: <https://www.youtube.com/watch?v=GNyQxXw_oMQ> -- Michael F. Stemper Deuteronomy 24:17

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RE: How to make a variable's late binding crosses the module boundary?
by Schachner, Joseph (US) Aug. 31, 2022

Aug. 31, 2022

The way we do this, is in main.py, call a "globalizer" function in each other file: # call globalizers to get shortcuts as global variables funcs.globalizer(interface, variable_dict) util.globalizer(interface, variable_dict) sd.globalizer(interface, variable_dict) tests.globalizer(interface, variable_dict) ut.globalizer(interface, variable_dict) Obviously, you may not need a shared interface in which case you can just pass the variable dictionary. In each file, you have a function: def globalizer(interface, variables_dict): # create global variables for this .py file for shared interface and the variables .... This works well, making sure separate python files shared exactly the same things we want to be global. ---- Joseph S. Teledyne Confidential; Commercially Sensitive Business Data -----Original Message----- From: Stefan Ram <ram(a)zedat.fu-berlin.de> Sent: Tuesday, August 30, 2022 1:09 AM To: python-list(a)python.org Subject: Re: How to make a variable's late binding crosses the module boundary? dn <PythonList(a)DancesWithMice.info> writes: >Build module.py as: >*** >CONSTANT = 1 >def func(): > pass >*** >then in the terminal: >*** >Python 3.9.13 (main, May 18 2022, 00:00:00) [GCC 11.3.1 20220421 (Red >Hat 11.3.1-2)] on linux Type "help", "copyright", "credits" or >"license" for more information. >>>> from module import func as f In CPython one then can also: print( f.__globals__[ "CONSTANT" ]) import sys module = sys.modules[ f.__globals__[ "__name__" ]] print( module.CONSTANT ) CONSTANT = module.CONSTANT print( CONSTANT ) .

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venv questions
by gene heskett Aug. 30, 2022

Aug. 30, 2022

Greetings all; The command to setup a venv, "python -m venv venv" has no man page that I have found. So I'm guessing that one of the venv's is the name of the one being created. Probably argv(3) in c parlance. What I am thinking about is setting up two venv's more or less named for the printer that copy of octoprint will administer, So how about some tutorial on creating the venv? But that might create another problem. how to differentiate the servers, both of which will want to use localhost:5000 to serve up their web pages we run things with. Suggested solutions? Cheers, Gene Heskett. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/>

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Re: venv questions
by Dennis Lee Bieber Aug. 30, 2022

Aug. 30, 2022

On Mon, 29 Aug 2022 22:57:50 -0400, gene heskett <gheskett(a)shentel.net> declaimed the following: >Greetings all; > >The command to setup a venv, "python -m venv venv" has no man page that >I have >found. > https://docs.python.org/3/library/venv.html -- Wulfraed Dennis Lee Bieber AF6VN wlfraed(a)ix.netcom.com http://wlfraed.microdiversity.freeddns.org/

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