知道一個數字是不是質數的方法是：
如果 n 不是質數，那麼 n 一定有一個小於等於 n 的因數。
所以我們可以用下面的程式判斷輸入的 n 是否為質數：
def is_prime(n):
for i in range(2, n):
if n % i == 0: # 整除，i 是 n 的因數，所以 n 不是質數。
Tzu-ping Chung uranusjr
🍒
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| """ | |
| Socket-compatible migration runner. | |
| How it bypasses FastAPI/HTTP coupling | |
| -------------------------------------- | |
| Cadwyn's VersionChange decorators store transformer callables on instruction | |
| objects. When an instruction is called it simply does: | |
| def __call__(self, info): | |
| return self.transformer(info) |
uranusjr
/ tabular-data.js
Last active
January 19, 2022 13:31
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| { | |
| "ambient": { // Ambient sensor. | |
| "ambient": [{x: timestamp, y: temperature}, /* more... */] | |
| }, | |
| "1-1": { // Silo 1, cable 1. | |
| "1": [{x: timestamp, y: temperature}, /* more... */], // Node 1. | |
| "2": [{x: timestamp, y: temperature}, /* more... */] // Node 2. | |
| } | |
| } |
uranusjr
/ pip-21.2-location-warnings.txt
Last active
August 1, 2021 04:04
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| (deb_system) | |
| siddhpant Kali Linux https://github.com/pypa/pip/issues/10151#issuecomment-888165609 | |
| Molkree Google Colab https://github.com/pypa/pip/issues/10151#issuecomment-886957554 | |
| pdxjohnny https://github.com/pypa/pip/issues/10151#issuecomment-889358122 | |
| KanTakahiro https://github.com/pypa/pip/issues/10151#issuecomment-889189881 | |
| (Cygwin) | |
| allenatdecisiv https://github.com/pypa/pip/issues/10151#issuecomment-886309065 | |
| (MSYS2) |
uranusjr
/ pip-10081.txt
Last active
June 19, 2021 08:48
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| Collecting pip | |
| Using cached pip-21.1.2-py3-none-any.whl (1.5 MB) | |
| Collecting wheel | |
| Using cached wheel-0.36.2-py2.py3-none-any.whl (35 kB) | |
| Collecting setuptools | |
| Using cached setuptools-57.0.0-py3-none-any.whl (821 kB) | |
| Installing collected packages: pip, wheel, setuptools | |
| Attempting uninstall: pip | |
| Found existing installation: pip 20.2.1 | |
| Uninstalling pip-20.2.1: |
uranusjr
/ pip-new-resolver-alpha.md
Last active
April 22, 2020 12:25
pip 依賴解釋器 Alpha 測試 https://github.com/pypa/pip/issues/8099
摘譯 The alpha dependency resolver: context and how to test，最後更新於 2020-04-21 03:14 UTC+8。
pip 20.1 中包含了一個 alpha 版本的依賴解析器全新實作。這個功能尚不穩定，不適合日常使用。本文將根據我們已知的測試需求滾動更新；若有任何回饋，請使用這個表單。
如之前公告，pip 開發團隊正在實作一個新的依賴解析器。我們在即日起釋出的新版本 pip 中包含了一個初步版本（alpha），讓使用者進行測試。
由於該功能預設關閉，要進行測試，需要在使用 pip 時加上 --unstable-feature=resolver。正常的 pip 使用情境不會受到新的解析器影響。
Partially translated from: https://pyfound.blogspot.com/2020/03/new-pip-resolver-to-roll-out-this-year.html
去年的 PSF 發文中提到，pip 的開發團隊正在為 pip 實作一個新的解析器（resolver）。我們計畫在今年把它釋出。
解析器的最重要改變會包括：
uranusjr
/ macdown-master-79c2a15.log
Created
February 21, 2020 07:12
Build failure log for MacDown site
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| 3:02:25 PM: Build ready to start | |
| 3:02:35 PM: build-image version: 8e315e54bc4032a32e73290be556cde4f8348c12 | |
| 3:02:35 PM: build-image tag: v2.8.2 | |
| 3:02:35 PM: buildbot version: 45cd00068410d70db72c9672cdd014995488e12a | |
| 3:02:35 PM: Fetching cached dependencies | |
| 3:02:35 PM: Starting to download cache of 216.5MB | |
| 3:02:51 PM: Finished downloading cache in 16.500911211s | |
| 3:02:51 PM: Starting to extract cache | |
| 3:02:57 PM: Finished extracting cache in 5.844598317s | |
| 3:02:57 PM: Finished fetching cache in 22.530673613s |
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