Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Respect the Built-in Names
Search
HayaoSuzuki
September 08, 2017
Technology
0
4.8k
Respect the Built-in Names
PyCon JP 2017 Day1 Lightning Talk
HayaoSuzuki
September 08, 2017
Tweet
Share
More Decks by HayaoSuzuki
See All by HayaoSuzuki
Tomorrow graphlib, Let us use everybody
hayaosuzuki
0
170
Tasting "Python Distilled"
hayaosuzuki
0
310
Let's implement useless Python objects
hayaosuzuki
0
1.9k
How to Write Robust Python Code
hayaosuzuki
5
4.4k
Unknown Evolution of the Built-in Function pow
hayaosuzuki
0
1.4k
Python for Everyday
hayaosuzuki
1
2.2k
How to Use In-Memory Streams
hayaosuzuki
1
5.6k
Do you know cmath module?
hayaosuzuki
0
3.3k
Elementary Number Theory with Python
hayaosuzuki
1
3.5k
Other Decks in Technology
See All in Technology
GA technologiesでのAI-Readyの取り組み@DataOps Night
yuto16
0
260
業務自動化プラットフォーム Google Agentspace に入門してみる #devio2025
maroon1st
0
190
AI ReadyなData PlatformとしてのAutonomous Databaseアップデート
oracle4engineer
PRO
0
160
空間を設計する力を考える / 20251004 Naoki Takahashi
shift_evolve
PRO
3
330
生成AI_その前_に_マルチクラウド時代の信頼できるデータを支えるSnowflakeメタデータ活用術.pdf
cm_mikami
0
110
「AI駆動PO」を考えてみる - 作る速さから価値のスループットへ:検査・適応で未来を開発 / AI-driven product owner. scrummat2025
yosuke_nagai
4
570
Pythonによる契約プログラミング入門 / PyCon JP 2025
7pairs
5
2.5k
【新卒研修資料】LLM・生成AI研修 / Large Language Model・Generative AI
brainpadpr
23
16k
DataOpsNight#8_Terragruntを用いたスケーラブルなSnowflakeインフラ管理
roki18d
1
330
AWSにおけるTrend Vision Oneの効果について
shimak
0
120
Why React!?? Next.jsそしてReactを改めてイチから選ぶ
ypresto
10
4.4k
BtoBプロダクト開発の深層
16bitidol
0
200
Featured
See All Featured
Stop Working from a Prison Cell
hatefulcrawdad
271
21k
Intergalactic Javascript Robots from Outer Space
tanoku
273
27k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.7k
Site-Speed That Sticks
csswizardry
11
880
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
162
15k
XXLCSS - How to scale CSS and keep your sanity
sugarenia
248
1.3M
GitHub's CSS Performance
jonrohan
1032
460k
Side Projects
sachag
455
43k
The Invisible Side of Design
smashingmag
301
51k
The Power of CSS Pseudo Elements
geoffreycrofte
79
6k
Docker and Python
trallard
46
3.6k
Scaling GitHub
holman
463
140k
Transcript
Respect the Built-in Names Hayao Suzuki PyCon JP 2017 Lightning
Talk at Waseda Univ. September 8, 2017
Who Am I? About Me Name Hayao Suzuki (@CardinalXaro) Blog
http://xaro.hatenablog.jp/ Major Mathematics (Combinatorics, Number Theory) Work Python Programmer at iRidge, Inc. Reviewed Books Effective Python (O’Reilly Japan) ΞϧΰϦζϜΫΠοΫϦϑΝϨϯε ୈ 2 ൛ (O’Reilly Japan) ॳΊͯͷ PHP (O’Reilly Japan) Effective Debugging (O’Reilly Japan) ͢Β͢ΒΘ͔Δ Python ʢᠳӭࣾʣ Python ͱ JavaScript Ͱ͡ΊΔσʔλϏδϡΞϥΠθʔγϣϯ (O’Reilly Japan) 2 / 9
Today’s Theme Respect the Built-in Names 3 / 9
Examples sum is a name of built-in function but... sum
= 0 for i in range(10): sum = sum + i print(sum) sum ͷೖѱ͍จ໌ʂʂ 4 / 9
Examples id is a name of built-in function but... id
= 12345 name = "Ξϧςϥ" print(f"Α͏ͦ͜{name}͞Μ (id={id})") id ͷೖѱ͍จ໌ʂʂ 5 / 9
Examples list is a name of sequence class but... list
= [1, 2, 3, 4, 5] for i in range(len(list)): print(list[i]) list ͷೖѱ͍จ໌ʂʂ 6 / 9
Examples dict is a name of mapping class but... dict
= {"spam": 0, "egg": 1, "bacon":2} for k, v in dict.items(): print("%s: %s" % (k, v)) dict ͷೖѱ͍จ໌ʂʂ 7 / 9
Examples json is a name of built-in module but... import
json import requests response = requests.get("https://examples.com") if response.status_code == 200: json = response.json() print(json.keys()) json ͷೖѱ͍จ໌ʂʂ 8 / 9
Conclusion Respect the built-in names Abuse of names causes a
trouble. If you provide objects with the same name as a built-in value, read builtins module’s documents. 9 / 9