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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Python’ Category

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GitHub – pyscripter/pyscripter: Pyscripter is a feature-rich but lightweight Python IDE

Posted by jpluimers on 2020/04/28

Just in case I ever need to develop Python scripts on Windows (nowadays it’s mostly on Linux/BSD based systems):[WayBack] GitHub – pyscripter/pyscripter: Pyscripter is a feature-rich but lightweight Python IDE.

If you like that, you can (also) help with this project: [WayBack] PyScripter localization Translate PyScripter into your own language.

Via: [WayBack] The PyScripter IDE, which is written in Delphi is looking for translators. We have set up a translation project on transifex.com and would be happy if s… – Lübbe Onken – Google+

–jeroen

Posted in Delphi, Development, Python, Scripting, Software Development | Leave a Comment »

Common SMTP message size limits

Posted by jpluimers on 2020/04/08

After a 2018 discussion with a “zorgkantoor” (Dutch for office that arranges for special long term health care needs, successor of AWBZ) about their very low (10 megabyte) SMTP message size limit – even though they expect scanned PDF documents.

Their web-care team posed this limit as normal, so I made a list of limits in their peer group, common world-wide and well-ranked Dutch internet providers.

My plan is to check the progression of these limits over time.

Note these are the bruto message sizes including encoded attachments. Since encoding in [WayBack] MIME Base64 – Wikipedia has a overhead of at least 37% (encoded size is at least 1.37 the original size), the unencoded maximum size is less than 73% of what is listed below.

References:

2018

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Posted in base64, Communications Development, Development, eMail, Encoding, Internet protocol suite, MIME, Power User, Python, Scripting, SMTP, SocialMedia, Software Development, TCP | Leave a Comment »

For my link archive: Python – Handling command-line arguments

Posted by jpluimers on 2020/04/02

The article is dense but goes way deeper than straightforward sys.argv[1:] handling: [WayBack] 10.6. Handling command-line arguments.

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

Printing all DNS records using DNSPython in Python 3 · GitHub

Posted by jpluimers on 2020/03/31

Cool example, which requires dnspython and might need an update of the DNS record type list (maybe dnspython has that list built in?):

[WayBack] Printing all DNS records using DNSPython in Python 3 · GitHub

–jeroen

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Posted in Development, Python, Scripting, Software Development | Leave a Comment »

GitHub – alexmojaki/birdseye: Quick, convenient, expression-centric, graphical Python debugger using the AST

Posted by jpluimers on 2020/03/26

This is soooo nice! [WayBack] GitHub – alexmojaki/birdseye: Quick, convenient, expression-centric, graphical Python debugger using the AST

It runs on localhost:7777

Via: [WayBack] Birdseye ist eine interessante Lösung, um detailliert nachzuvollziehen, was beim Aufruf von Python-Funktionen und der Abarbeitung von Schleifen geschieh… – Martin Vogel – Google+

–jeroen

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Posted in Development, Python, Scripting, Software Development | Leave a Comment »

python – How do I install pip on macOS or OS X? – Stack Overflow

Posted by jpluimers on 2020/03/25

On Mac OS X with stock Python:

All you need to do is

sudo easy_install pip

After this, you might want to upgrade pip:

sudo pip install --upgrade pip

Source: [WayBack] python – How do I install pip on macOS or OS X? – Stack Overflow

You could go the homebrew way, but that means your system will have two Python installations usually causing a nightmare of path dependency orders. In addition, homebrew puts you on the wrong foot, so:

DO NOT DO THIS!

# brew install pip
Error: No available formula with the name "pip" 
Homebrew provides pip via: `brew install python`. However you will then
have two Pythons installed on your Mac, so alternatively you can install
pip via the instructions at:
  https://pip.readthedocs.io/en/stable/installing/

–jeroen

Posted in Apple, Development, Mac OS X / OS X / MacOS, macOS 10.12 Sierra, macOS 10.13 High Sierra, Power User, Python, Scripting, Software Development | Leave a Comment »

Practical Deep Learning for Coders 2018 · fast.ai

Posted by jpluimers on 2020/03/11

I’ve read this twice and need to re-read this a few times, so from my reading list then need to follow the course one day: Practical Deep Learning for Coders 2018 · fast.ai [WayBack].

… deep learning course based on Pytorch (and a new library we have built, called fastai), with the goal of allowing more students to be able to achieve world-class results with deep learning. … this course, Practical Deep Learning for Coders 2018 [WayBack], … The only prerequisites are a year of coding experience, and high school math (math required for understanding the material is introduced as required during the course).

Related: [WayBack] The Matrix Calculus You Need For Deep Learning – Terence Parr and Jeremy Howard

Via:

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

GitHub – mgedmin/check-manifest: Tool to check the completeness of MANIFEST.in for Python packages

Posted by jpluimers on 2020/02/27

I will need thi sone day: [WayBack] GitHub – mgedmin/check-manifest: Tool to check the completeness of MANIFEST.in for Python packages

Are you a Python developer? Have you uploaded packages to the Python Package Index? Have you accidentally uploaded broken packages with some files missing? If so, check-manifest is for you.

Via: [WayBack] check-manifest: a tool to check the completeness of MANIFEST.in for Python packages  – ThisIsWhyICode – Google+

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

More great free Python books

Posted by jpluimers on 2020/02/20

A while ago I wrote about Until 20171201 you can get free access to “Automate the Boring Stuff with Python”?.

That book is still free. And these great books are too:

Via: [WayBack] Cracking Codes with Python by @AlSweigart teaches complete beginners how to program in Python. The book features the source code to several ciphers and … – ThisIsWhyICode – Google+

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

Python – list transformation; string formatting – Stack Overflow

Posted by jpluimers on 2020/01/08

Sometimes simple examples are the best: [WayBack] Python – list transformation – Stack Overflow.

Interactive example (note you can run and save at repl.it in either [WayBack] Repl.it – Python 3 or [WayBack] Repl.it – Python 2; you can run but not save it at [WayBack] Welcome to Python.org: interactive Python shell):

# Links the documentation are Python 2, though everything works in Python 3 as well.

x = [1,2,3,4,5,11]
print("x: ", repr(x))

y = ['01','02','03','04','05','11']
print("y: ", repr(y))

# List comprehension https://docs.python.org/2/tutorial/datastructures.html#list-comprehensions
# ... using `str.format()` (Python >= 2.6): https://docs.python.org/2/library/stdtypes.html#str.format and https://docs.python.org/2/library/string.html#formatstrings
y = ["{0:0>2}".format(v) for v in x]
print("y: ", repr(y))

# ... using the traditional `%` formatting operator (Python < 2.6): https://docs.python.org/2/library/stdtypes.html#string-formatting y = ["%02d" % v for v in x] print("y: ", repr(y)) # ... using the format()` function (Python >= 2.6): https://docs.python.org/2/library/functions.html#format and https://docs.python.org/2/library/string.html#formatstrings
# this omits the "{0:...}" ceremony from the positional #0 parameter
y = [format(v, "0>2") for v in x]
print("y: ", repr(y))

# Note that for new style format strings, the positional argument (to specify argument #0) is optional (Python >= 2.7) https://docs.python.org/2/library/string.html#formatstrings
y = ["{:0>2}".format(v) for v in x]
print("y: ", repr(y))

# Using `lambda`
# ... Python < 3 return a list y = map(lambda v: "%02d" %v, x) print("y: ", repr(y)) # ... Python >= 3 return a map object to iterate over https://stackoverflow.com/questions/1303347/getting-a-map-to-return-a-list-in-python-3-x/1303354#1303354
y = list(map(lambda v: "%02d" %v, x))
print("y: ", repr(y))

Output:

Python 3 Python 2 
Python 3.6.1 (default, Dec 2015, 13:05:11)
[GCC 4.8.2] on linux
   
x:  [1, 2, 3, 4, 5, 11]
y:  ['01', '02', '03', '04', '05', '11']
y:  ['01', '02', '03', '04', '05', '11']
y:  ['01', '02', '03', '04', '05', '11']
y:  ['01', '02', '03', '04', '05', '11']
y:  ['01', '02', '03', '04', '05', '11']
y:  <map object at 0x7fe1218200b8>
y:  ['01', '02', '03', '04', '05', '11']
 
Python 2.7.10 (default, Jul 14 2015, 19:46:27)
[GCC 4.8.2] on linux
   
('x: ', '[1, 2, 3, 4, 5, 11]')
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")

–jeroen

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Posted in Conference Topics, Conferences, Development, Event, Python, Scripting, Software Development | Leave a Comment »

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