Introduction to python 3 2nd round
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This document provides an introduction and agenda for a workshop on Python 3 scripting. The introduction covers the presenter's background in Python and an overview of what Python is. The agenda outlines the goals of making Python ready on attendees' workstations, preparing them for Python 3, providing resources for learning Python 3, and a quiz. Basic topics to be covered include setting up Python, a "Hello world!" example, and doing basic practices with conditionals, loops, files, and networking. Attendees will do an exercise writing their first Python script to make an HTTP request. Study materials are recommended after the workshop.
![Let’s install ipython using pip
1. Ensure connectivity to the Internet
2. Type `pip install ipython`
3. Hit [Enter]
…](https://image.slidesharecdn.com/introductiontopython3-2ndround-161028043409/85/Introduction-to-python-3-2nd-round-19-320.jpg)
![pip and ipython
•pip … Package manager in Python
• Packages are on public repository similarly with apt, ppm, npm, etc
•ipython … Enhanced interactive shell
• [TAB] -> completion
• `?` -> show help
• `??` -> show source
• `_` -> refer last output
• Auto indentation, [Ctrl]+c capturing, search ([Ctrl]+r), etc](https://image.slidesharecdn.com/introductiontopython3-2ndround-161028043409/85/Introduction-to-python-3-2nd-round-20-320.jpg)
![“Hello world!”
1. Run `python` or `ipython`
2. Type `print(“Hello world!”)`
3. Hit [Enter]](https://image.slidesharecdn.com/introductiontopython3-2ndround-161028043409/85/Introduction-to-python-3-2nd-round-22-320.jpg)
![Do basic practices – if … elif … else
1. Run `ipython`
2. Type code(s)
3. Hit [Enter]](https://image.slidesharecdn.com/introductiontopython3-2ndround-161028043409/85/Introduction-to-python-3-2nd-round-25-320.jpg)
![Do basic practices – list, len(…)
1. Run `ipython`
2. Type code(s)
3. Hit [Enter]](https://image.slidesharecdn.com/introductiontopython3-2ndround-161028043409/85/Introduction-to-python-3-2nd-round-26-320.jpg)
![Do basic practices – for … in …, range(…)
1. Run `ipython`
2. Type code(s)
3. Hit [Enter]](https://image.slidesharecdn.com/introductiontopython3-2ndround-161028043409/85/Introduction-to-python-3-2nd-round-27-320.jpg)
![Do basic practices – while …, import
1. Run `ipython`
2. Type code(s)
3. Hit [Enter]](https://image.slidesharecdn.com/introductiontopython3-2ndround-161028043409/85/Introduction-to-python-3-2nd-round-28-320.jpg)
![Do basic practices – open, “…”, b”…”
1. Run `ipython`
2. Type code(s)
3. Hit [Enter]](https://image.slidesharecdn.com/introductiontopython3-2ndround-161028043409/85/Introduction-to-python-3-2nd-round-29-320.jpg)
![Do basic practices – open, “…”, b”…”
1. Run `ipython`
2. Type code(s)
3. Hit [Enter]](https://image.slidesharecdn.com/introductiontopython3-2ndround-161028043409/85/Introduction-to-python-3-2nd-round-31-320.jpg)
![Do basic practices – urlopen
1. Run `ipython`
2. Type code(s)
3. Hit [Enter]](https://image.slidesharecdn.com/introductiontopython3-2ndround-161028043409/85/Introduction-to-python-3-2nd-round-32-320.jpg)
Introduction to python 3 2nd round
- 1. Introduction to Python 3 “Your first scripting in Python 3.x” workshop Youhei Sakurai, TC, CSS, YSJ EU-US time zone, 31 October, 2016
- 2. Youhei Sakurai • Intermediate Pythonista • Started to learn Python in 2010. • Have been introducing Python several times since 2011. • Publishing one package on PyPI – PyMemoryModule. • My name is written in change log of lxml 3.6.0.
- 3. Rules • Will finish on time even if some of topics are not completed. • Turn on your web-cam to enhance your active involvement. • Raise your questions to drive bi-directional communication. • If it is beyond beginner’s level, I’d suggest to have separate call. • If there’re too many, I’d select rather important ones for everyone. • Stay sharp with your text editor and Python installer.
- 4. Agenda • What’s Python • How Python looks like • Let’s set up Python • “Hello world!” • Do basic practices • Your first scripting • Study materials • Kahoot quiz
- 5. Goals • Make Python ready on your workstation. • Make yourself ready in the Python 3.x Ocean. • Get breadcrumb list to learn Python 3.x. • And... Let you get high score at Kahoot quiz.
- 6. What’s Python Make Python ready Make yourself ready Get breadcrumb list
- 7. Python is,,, • Programing language like Java, C, Perl, Ruby, etc • Easy to run because of cross platform scripting language • Clear look & feel thanks to language design and culture hating magics • Able do anything (multi-purpose glue language) except writing OS/drivers • Used everywhere e.g. in Amazon, Google, Yahoo, Dropbox, NASA, etc
- 8. Most attractive features • Batteries included • Web server, database, GUI, networking, regex, XML, JSON, archiving, C/C++ integration, thread/process pooling, async I/O, serialization, etc. • More batteries invented • Intelligences are innovating technologies all over the world day by day. • You can try the innovations using pip through the Internet. • Easier than English • Even I can write Python codes better than English email. • All you need is not LOVE but intelligence with a little knowledge about Python.
- 9. My favorites • Python runs everywhere • Python allows me to explain things very clearly
- 10. A few disadvantages • Slower than C/C++ and assembly • No JIT (Just-In-Time) compiler equipped in CPython • Jython and IronPython falls much behind CPython • Weaker multithreading due to GIL in CPython Who cares?
- 11. So Python could be also,,, Something special making your professional life much more brilliant never ever before!!
- 12. A bit more about Python History of Python • Created in 1989 by Guido Van Rossum • Python 2.7 released in 2010 • Python 3.5 released in 2015 PEP 404 - No 2.8 planned PEP 373 - EOL of 2.7 planed in 2020 Zen of Python (by Tim Peters) • Beautiful is better than ugly. • Explicit is better than implicit. • Simple is better than complex. …
- 13. What’s Python How Python looks like Make Python ready Make yourself ready Get breadcrumb list
- 14. How Python looks like Interactive shell • Just run `python` or `python3` Script 1. Create e.g. `script.py` file 2. Save it as UTF-8 text file 3. Run `python script.py` Version info Type any codes
- 15. Differentiations from C style code 1. `:` + 4x space instead of `{ … }` 2. Pascal-like operators -> `and` `or` `not` 3. Bash-like comment -> starting with `#` 4. No difference between `’` and `”` 5. No need to put `;` at the end of line sample.py sample.c
- 16. What’s Python How Python looks like Let’s set up Python Make Python ready Make yourself ready Get breadcrumb list
- 17. Let’s set up Python Windows / Mac OS X 1. Download installer 2. Double-click installer Windows -> Add Python to PATH Mac OS X -> Do NEVER fix system Python 3. Complete installation Linux (Debian/Ubuntu) 1. Retrieve packages list apt-get update 2. Install Python 3.x apt-get install python3 3. Install pip apt-get install python3-pip
- 18. Where to install? `C:¥Python35` and `C:¥Python35-x64` IMHO
- 19. Let’s install ipython using pip 1. Ensure connectivity to the Internet 2. Type `pip install ipython` 3. Hit [Enter] …
- 20. pip and ipython •pip … Package manager in Python • Packages are on public repository similarly with apt, ppm, npm, etc •ipython … Enhanced interactive shell • [TAB] -> completion • `?` -> show help • `??` -> show source • `_` -> refer last output • Auto indentation, [Ctrl]+c capturing, search ([Ctrl]+r), etc
- 21. What’s Python How Python looks like Let’s set up Python “Hello world!” ✓Make Python ready Make yourself ready Get breadcrumb list
- 22. “Hello world!” 1. Run `python` or `ipython` 2. Type `print(“Hello world!”)` 3. Hit [Enter]
- 23. How Python looks like Let’s set up Python “Hello world!” Do basic practices ✓Make Python ready Make yourself ready Get breadcrumb list
- 24. Differentiations from C style code 1. `:` + indentation instead of `{ … }` 2. Pascal-like operators -> `and` `or` `not` 3. Bash-like comment -> starting with `#` 4. No difference between `’` and `”` 5. No need to put `;` at the end of line sample.py sample.c
- 25. Do basic practices – if … elif … else 1. Run `ipython` 2. Type code(s) 3. Hit [Enter]
- 26. Do basic practices – list, len(…) 1. Run `ipython` 2. Type code(s) 3. Hit [Enter]
- 27. Do basic practices – for … in …, range(…) 1. Run `ipython` 2. Type code(s) 3. Hit [Enter]
- 28. Do basic practices – while …, import 1. Run `ipython` 2. Type code(s) 3. Hit [Enter]
- 29. Do basic practices – open, “…”, b”…” 1. Run `ipython` 2. Type code(s) 3. Hit [Enter]
- 30. str object v.s. bytes object str – String "text" bytes – Binary data b"¥x74¥x65¥x78¥x74" (= b"text") "text".encode() b"text".decode()
- 31. Do basic practices – open, “…”, b”…” 1. Run `ipython` 2. Type code(s) 3. Hit [Enter]
- 32. Do basic practices – urlopen 1. Run `ipython` 2. Type code(s) 3. Hit [Enter]
- 33. Let’s set up Python “Hello world!” Do basic practices Your first scripting ✓Make Python ready ✓Make yourself ready Get breadcrumb list
- 34. Your first scripting • I am going to write dummy Web server. • My script will do: • Listen on 80/tcp. • Accept incoming connections. • Respond random number of words. • You are going to write HTTP client. • Your script will do: • Access server via HTTP. • Read content from response object. <- How to decode binary data? • Split content by white space. <- How to split string? • Print how many words in response. <- How to count list of strings?
- 35. “Hello world!” Do basic practices Your first scripting Study materials ✓Make Python ready ✓Make yourself ready Get breadcrumb list
- 36. Study materials •The Python Tutorial • Describes all you need to know about Python •Learn Python the Hard Way • Gives practical tasks to make you able to write Python codes •GitHub • Guides how you should write well-mannered Python codes
- 37. Congratulations!! ✓Make Python ready ✓Make yourself ready ✓Get breadcrumb list
- 38. Thank you for your participation. Open Kahoot! - https://kahoot.it