Modern Python through FastAPI and friends - PyCon India

Keynote at PyCon India 2021-09-18

Explore some of the great features from modern Python and how to use them with FastAPI and friends.

We will see how to make code that is less error-prone, simpler, more efficient, and have a great developer experience, all at the same time.

And all this while including best practices by default.

We will see a bit about type annotations (type hints), async/await, and an overview of FastAPI, Typer, and others.

This talk doesn't expect any technical background, just some basic knowledge of Python.

Transcript

1. Modern Python through and friends
2. Who am I? Sebastián Ramírez github.com/tiangolo linkedin.com/in/tiangolo twitter.com/tiangolo tiangolo.com Berlin, Germany Staff Software Engineer at I created: ➕ External Consultant for other teams
3. Modern Python Currently supported versions (3.6+) 📝 f-strings 🧙 Type annotations ⏱ async / await ⚡ Performance 👥 Community • Pydantic • HTTPX • Starlette • Uvicorn • Uvloop • Rich • Click @tiangolo • Pydantic • SQLAlchemy
4. • Web API framework • 35K GitHub stars (about 1K+ per month) • Used by Microsoft, Uber, Netflix, etc. • Performance in the top rank for Python High performance, easy to learn, fast to code, ready for production @tiangolo
5. Modern Python 📝 f-strings (formatted strings) @tiangolo
6. 📝 f-strings (formatted strings) @tiangolo
7. 📝 f-strings (formatted strings) @tiangolo
8. 📝 f-strings (formatted strings) @tiangolo
9. 📝 f-strings (formatted strings) @tiangolo
10. 📝 f-strings (formatted strings) @tiangolo
11. Modern Python 🧙 Type annotations (type hints) @tiangolo
12. 🧙 Type annotations (type hints) @tiangolo
13. 🧙 Type annotations (type hints) @tiangolo
14. 🧙 Type annotations (type hints) @tiangolo
15. 🧙 Type annotations (type hints) - autocompletion @tiangolo
16. 🧙 Type annotations (type hints) - autocompletion @tiangolo
17. 🧙 Type annotations (type hints) - autocompletion @tiangolo
18. 🧙 Type annotations (type hints) @tiangolo
19. 🧙 Type annotations (type hints) @tiangolo
20. 🧙 Type annotations (type hints) @tiangolo
21. 🧙 Type annotations (type hints) @tiangolo
22. 🧙 Type annotations (type hints) - error detection @tiangolo
23. 🧙 Type annotations (type hints) - error detection @tiangolo
24. 🧙 Type annotations (type hints) @tiangolo
25. 🧙 Type annotations (type hints) - error detection @tiangolo
26. 🧙 Type annotations (type hints) - error detection @tiangolo
27. 🧙 Type annotations (type hints) - error detection @tiangolo
28. 🧙 Type annotations (type hints) - error detection @tiangolo
29. 🧙 Type annotations (type hints) @tiangolo
30. 🧙 Type annotations (type hints) @tiangolo
31. 🧙 Type annotations (type hints) @tiangolo
32. 🧙 Type annotations (type hints) @tiangolo
33. Some of the people behind: Jukka Lehtosalo Ivan Levkivskyi Michael J. Sullivan @JukkaLeh @JukkaL @ILevkivskyi @ilevkivskyi @msully4321 @msullivan 🧙 Type annotations (type hints) @tiangolo
34. Modern Python 🧙 Type annotations with @tiangolo
35. 🧙 Type annotations with FastAPI @tiangolo
36. 🧙 Type annotations with FastAPI @tiangolo
37. 🧙 Type annotations with FastAPI - autocompletion @tiangolo
38. 🧙 Type annotations with FastAPI - autocompletion @tiangolo
39. 🧙 Type annotations with FastAPI - error detection @tiangolo
40. http://127.0.0.1:8000/docs FastAPI - API documentation @tiangolo
41. FastAPI - API documentation @tiangolo
42. FastAPI - API documentation @tiangolo
43. FastAPI - data validation @tiangolo
44. FastAPI - data validation @tiangolo
45. FastAPI - data validation @tiangolo
46. FastAPI - data conversion http://127.0.0.1:8000/recipes/crunchy-frog?quantity=2 @tiangolo
47. FastAPI - data conversion @tiangolo
48. FastAPI - Type hints @tiangolo
49. • OpenAPI • JSON Schema • OAuth2 🔄 Automatic data conversion ✨ ✅ Automatic data validation ✨ FastAPI is based on standards 📝 Automatic API docs ✨ • Standard type annotations @tiangolo
50. Modern Python 🧙 Type annotations with @tiangolo
51. Type annotations with Typer @tiangolo
52. Type annotations with Typer @tiangolo
53. Typer - automatic help @tiangolo
54. Typer - CLI Arguments @tiangolo
55. Typer - CLI Options @tiangolo
56. Typer - validation @tiangolo
57. <TAB> Typer - shell (TAB) completion @tiangolo
58. Typer @tiangolo
59. Modern Python 🧙 Type annotations with and Rich @tiangolo
60. Typer with Rich @tiangolo
61. Typer with Rich @tiangolo
62. Typer with Rich @tiangolo
63. David Lord Click maintainer Will McGugan Rich creator @davidism @davidism @willmcgugan @willmcgugan Typer and friends - the people behind @tiangolo
64. Modern Python 🧙 Type annotations with and Pydantic @tiangolo
65. FastAPI with Pydantic @tiangolo
66. FastAPI with Pydantic @tiangolo
67. FastAPI with Pydantic - API documentation @tiangolo
68. FastAPI with Pydantic - interactive API docs @tiangolo
69. FastAPI with Pydantic - interactive API docs @tiangolo
70. FastAPI with Pydantic - data validation @tiangolo
71. FastAPI with Pydantic - data validation @tiangolo
72. FastAPI with Pydantic - nested data @tiangolo
73. FastAPI with Pydantic - nested data @tiangolo
74. FastAPI with Pydantic - autocompletion @tiangolo
75. FastAPI with Pydantic - autocompletion @tiangolo
76. FastAPI with Pydantic - error detection @tiangolo
77. Samuel Colvin Pydantic creator David Montague Pydantic and FastAPI notorious contributor @samuel_colvin @samuelcolvin @dmontagu FastAPI - the people behind Tom Christie Creator of Starlette (and more) @_tomchristie @tomchristie @tiangolo
78. Modern Python 🧙 Type annotations with and @tiangolo
79. FastAPI with SQLModel @tiangolo
80. FastAPI with SQLModel @tiangolo
81. FastAPI with SQLModel @tiangolo
82. FastAPI with SQLModel @tiangolo
83. FastAPI with SQLModel @tiangolo
84. Samuel Colvin Pydantic creator @samuel_colvin @samuelcolvin SQLModel - the people behind Mike Bayer SQLAlchemy creator @zzzeek @zzzeek @tiangolo
85. Modern Python ⏱ async / await @tiangolo
86. ⏱ async / await - concurrency @tiangolo
87. ⏱ async / await - concurrency @tiangolo
88. ⏱ async / await - concurrency Photo by John Cameron: https://unsplash.com/@john_cameron @tiangolo
89. ⏱ async / await - concurrency @tiangolo
90. ⏱ async / await - concurrency @tiangolo
91. ⏱ async / await - concurrency Photo by Kate Townsend: https://unsplash.com/@k8townsend @tiangolo
92. ⏱ async / await - concurrency @tiangolo
93. ⏱ async / await - FastAPI and HTTPX @tiangolo
94. ⏱ async / await - FastAPI and HTTPX @tiangolo
95. ⏱ async / await - FastAPI and HTTPX @tiangolo
96. ⏱ async / await - optional with FastAPI and HTTPX @tiangolo
97. ⏱ async / await - optional with FastAPI and HTTPX @tiangolo
98. FastAPI async / await - the people behind Tom Christie Creator of Starlette, HTTPX, and more @_tomchristie @tomchristie Florimond Manca Co-maintainer of HTTPX, and others @florimondmanca @florimondmanca Andrew Godwin Author of the ASGI specification @andrewgodwin @andrewgodwin @tiangolo
99. ⚡ Performance with FastAPI @tiangolo
100. ⚡ Performance with FastAPI @tiangolo
101. ⚡ Performance with FastAPI @tiangolo
102. ⚡ Performance with FastAPI @tiangolo
103. ⚡ Performance - the people behind Tom Christie Creator of Starlette, Uvicorn, and more @_tomchristie @tomchristie Yury Selivanov Creator of Uvloop @1st1 @1st1 Stefan Behnel Maintainer of Cython @scoder @tiangolo
104. 👥 Community • All by normal people 👥 • Mostly during free time ⏰ • Trying to help others ✨ @tiangolo
105. 👥 Community @tiangolo
106. 👥 Community - FastAPI You can help too! 🚀 • Translate a page 👥 • Review translations from others 🔍 • Answer questions from others 🗣 • Help with bugs and features 🤓 • Help with other projects 󰠁󰞵 https://fastapi.tiangolo.com/help-fastapi/ https://fastapi.tiangolo.com/contributing/#translations @tiangolo
108. Thank you! Sebastián Ramírez tiangolo.com fastapi.tiangolo.com github.com/tiangolo linkedin.com/in/tiangolo twitter.com/tiangolo