Python is arguably the world's most popular programming language. It is easy to learn, yet suitable in professional software like web applications, data science, and server-side scripts. https://fireship.io/tags/python/

#python #programming #100SecondsOfCode

🔗 Resources

Python Docs https://docs.python.org/3/
Python TIOBE Ranking https://www.infoworld.com/article/3636789/python-tops-tiobe-language-index.html

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🔖 Topics Covered

- Is YouTube built with Python?
- Is Python Strongly typed?
- Python syntax and indentation rules
- When was python released?

Python in 100 Seconds

Duck typing and static typing are not opposites. Go is a successful statically checked language with support for duck typing through interfaces that work like `typing.Protocol` does. A `Protocol` subclass defines an interface that past and future classes can implement without any coupling to the interface: they simply provide the required methods. That's statically checked duck typing: a powerful combination!

In this talk we'll get back to basics looking at how duck typing is used in Python since the beginning, how `__dunder__` methods leverage that idea to support what we recognize as Pythonic code. Then we'll see how `typing.Protocol` fills the gap in the original PEP 484—Type Hints, and finally lets us properly annotate code that leverages the flexibility and loose coupling of duck typing. Finally, we'll look at the experience of the Go community to learn what makes a good Protocol. Spoiler alert: your favorite Python ABC may not be the basis of a useful Protocol!

PUBLICATION PERMISSIONS:
Original video was published with the Creative Commons Attribution license (reuse allowed). Link: https://www.youtube.com/watch?v=0_IQoxBFepw

`typing.Protocol`: Type Hints in Python

This Python tutorial for beginners show how to get started with Python quickly. Learn to code in 1 hour! Watch this tutorial get started! 
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#Python, #MachineLearning, #WebDevelopment

📔 Python Exercises for Beginners: https://goo.gl/1XnQB1

⭐ My Favorite Python Books
- Python Crash Course: https://amzn.to/2GqMdjG
- Automate the Boring Stuff with Python: https://amzn.to/2N71d6S
- A Smarter Way to Learn Python: https://amzn.to/2UZa6lE
- Machine Learning for Absolute Beginners: https://amzn.to/2Gs0koL
- Hands-on Machine Learning with scikit-learn and TensorFlow: https://amzn.to/2IdUuJy

TABLE OF CONTENT

0:00:00 Introduction 
0:00:30 What You Can Do With Python 
0:01:15 Your First Python Program 
0:05:30 Variables
0:09:08 Receiving Input
0:10:48 Type Conversion
0:18:49 Strings
0:23:41 Arithmetic Operators 
0:25:59 Operator Precedence 
0:27:11 Comparison Operators 
0:28:52 Logical Operators
0:31:06 If Statements
0:36:16 Exercise
0:41:42 While Loops
0:45:11 Lists
0:48:47 List Methods
0:52:16 For Loops
0:54:54 The range() Function 
0:57:43 Tuples

Python for Beginners - Learn Python in 1 Hour

New breaking changes were just introduced in Python.

The default behavior of how int to string and string to int conversions work has been changed, with a limit being set on the number of allowed digits, with the default limit now being 4300. The old behavior can be configured using a new sys call, but why was this change introduced in the first place? In this video, we go over the change, the underlying algorithmic and security reasons it was added, and present different viewpoints of community members both in favor of and against the changes.

― mCoding with James Murphy (https://mcoding.io)

Voice your opinion: https://discuss.python.org/t/int-str-conversions-broken-in-latest-python-bugfix-releases/18889

Source code: https://github.com/mCodingLLC/VideosSampleCode
Conversion limit docs: https://docs.python.org/3/library/stdtypes.html#int-max-str-digits
Conversion implementations: https://github.com/python/cpython/blob/main/Objects/longobject.c
CPython GitHub issue: https://github.com/python/cpython/issues/95778
Work on faster algorithms: https://github.com/python/cpython/issues/90716
Mitre CVE page: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10735
RedHat initial CVE report: https://bugzilla.redhat.com/show_bug.cgi?id=1834423
RedHat CVE "public on": https://access.redhat.com/security/cve/CVE-2020-10735

SUPPORT ME ⭐
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str/int: Controversial breaking change added to Python

Learn network penetration testing / ethical hacking in this full tutorial course for beginners. This course teaches everything you need to know to get started with ethical hacking and penetration testing. You will learn the practical skills necessary to work in the field. Throughout the course, we will develop our own Active Directory lab in Windows, make it vulnerable, hack it, and patch it. We'll cover the red and blue sides. We'll also cover some of the boring stuff like report writing :).

This course was originally live streamed weekly on Twitch and built from lessons learned in the previous week. 

💻 GitHub repo (for homework): https://github.com/hmaverickadams/Beginner-Network-Pentesting

🎥 Course created by The Cyber Mentor. Check out his YouTube channel: https://www.youtube.com/channel/UC0ArlFuFYMpEewyRBzdLHiw
🐦 The Cyber Mentor on Twitter: https://twitter.com/thecybermentor

⭐️ Course Contents ⭐️
⌨️ (0:00) - Course Introduction/whoami
⌨️ (6:12) -  Part 1: Introduction, Notekeeping, and Introductory Linux
⌨️ (1:43:45) - Part 2: Python 101
⌨️ (3:10:05) - Part 3: Python 102 (Building a Terrible Port Scanner)
⌨️ (4:23:14) - Part 4: Passive OSINT
⌨️ (5:41:41) - Part 5: Scanning Tools & Tactics
⌨️ (6:56:42) - Part 6: Enumeration
⌨️ (8:31:22) - Part 7: Exploitation, Shells, and Some Credential Stuffing
⌨️ (9:57:15) - Part 8: Building an AD Lab, LLMNR Poisoning, and NTLMv2 Cracking with Hashcat
⌨️ (11:13:20) - Part 9: NTLM Relay, Token Impersonation, Pass the Hash, PsExec, and more
⌨️ (12:40:46) - Part 10: MS17-010, GPP/cPasswords, and Kerberoasting
⌨️ (13:32:33) - Part 11: File Transfers, Pivoting, Report Writing, and Career Advice

--

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Full Ethical Hacking Course - Network Penetration Testing for Beginners (2019)

Python has lot of useful format strings.

f-strings in Python are not just a way to easily substitute variables inside strings, they come with a wide array of conversion, formatting, and debugging options which we give examples of in this video.

Note: I'm trying a more informal style in this video so make sure to let me know if you like it better this way, as opposed to my usual cut-after-every-sentence editing.

― mCoding with James Murphy (https://mcoding.io)

Source code: https://github.com/mCodingLLC/VideosSampleCode
f-string docs: https://docs.python.org/3/reference/lexical_analysis.html#f-strings

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Python f-strings can do more than you thought. f'{val=}', f'{val!r}', f'{dt:%Y-%m-%d}'

Python's favorite unexplained incantation!

Do you know def main if __name__ == '__main__'?  In this video I explain why your Python scripts should use this idiom. It's not strictly necessary, but you will be a better Python coder if you follow established conventions that improve the readability of your code.

― mCoding with James Murphy (https://mcoding.io)

Source code: https://github.com/mCodingLLC/VideosSampleCode
StackOverflow on the topic: https://stackoverflow.com/questions/419163/what-does-if-name-main-do
Python docs: https://docs.python.org/3/reference/toplevel_components.html#complete-python-programs

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Other donations: https://mcoding.io/donate

Top patrons and donors:
Jameson, John M, Laura M, Pieter G, Vahnekie, Sigmanificient

BE ACTIVE IN MY COMMUNITY 😄
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CHAPTERS
---------------------------------------------------
0:00 Intro
0:58 Dunder name
1:47 Why if name main
3:36 Why def main
4:59 Pickle example
5:42 Multiprocessing example
6:42 Main function entry point
7:07 Outro

You should put this in all your Python scripts | if __name__ == '__main__': ...

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