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zhailwV2EX 第 335447 号会员，加入于 2018-07-24 18:44:40 +08:00 |
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zhailw 最近回复了
2023-03-23 12:56:10 +08:00 回复了 killva4624 创建的主题 › 问与答 › 为什么 π 会比 3.2 大？ |
测试了 Bard 的回答是对的
Q: Is π greater than 3.2?
A: No, pi is not greater than 3.2. Pi is an irrational number, which means that its decimal representation never ends or repeats. Its approximate value is 3.141592653589793. 3.2 is a rational number, which means that its decimal representation can be written as a fraction.
Q: Is π greater than 3.2?
A: No, pi is not greater than 3.2. Pi is an irrational number, which means that its decimal representation never ends or repeats. Its approximate value is 3.141592653589793. 3.2 is a rational number, which means that its decimal representation can be written as a fraction.
2023-01-06 18:59:38 +08:00 回复了 herozzm 创建的主题 › 问与答 › 求：一款 1 分钟（或指定时间内）请求次超过 x 次就将 ip 加入封禁的运维工具 |
fail2ban 自己针对日志写配置文件，还是挺方便的
2022-04-25 18:41:55 +08:00 回复了 cheitu 创建的主题 › 编程 › 3000 人民币预算有偿求助解决一个求极大值问题 |
楼主三分法怎么实现的啊？我大概算了一下，230 步左右就可以求出来了啊？这样都满足不了要求么？
而且如果曲线没有其他性质的话，n 分法就是最优解了啊
而且如果曲线没有其他性质的话，n 分法就是最优解了啊
2022-03-27 13:36:49 +08:00 回复了 LeeReamond 创建的主题 › Python › 分享一个自用的 timeit 给代码计时的奇技淫巧 |
貌似回复贴不支持代码块,缩进有点问题,但是应该也能看懂吧
@zhailw
@zhailw
2022-03-27 13:33:15 +08:00 回复了 LeeReamond 创建的主题 › Python › 分享一个自用的 timeit 给代码计时的奇技淫巧 |
```python
import time
import timeit as original_timeit
def timeit(times):
start_time = time.time()
yield from range(int(times))
used_time = time.time() - start_time
print('average used time:' + str(used_time / times))
rounds = int(1e6)
for _ in timeit(rounds):
"-".join(map(str, range(100)))
print('original_timeit: ', original_timeit.timeit('"-".join(map(str, range(100)))', number=rounds) / rounds)
print('done')
```
average used time:8.731926918029785e-06
original_timeit: 8.62705747198197e-06
done
@LeeReamond
import time
import timeit as original_timeit
def timeit(times):
start_time = time.time()
yield from range(int(times))
used_time = time.time() - start_time
print('average used time:' + str(used_time / times))
rounds = int(1e6)
for _ in timeit(rounds):
"-".join(map(str, range(100)))
print('original_timeit: ', original_timeit.timeit('"-".join(map(str, range(100)))', number=rounds) / rounds)
print('done')
```
average used time:8.731926918029785e-06
original_timeit: 8.62705747198197e-06
done
@LeeReamond
2022-03-26 23:38:23 +08:00 回复了 LeeReamond 创建的主题 › Python › 分享一个自用的 timeit 给代码计时的奇技淫巧 |
有一个小问题啊，不知道楼主有没有想过用 for _ in timeit(1e6): 这种形式啊？不是更简单么？也比 with 多不了几个字符，但是感觉更优雅一点？
2021-10-10 17:42:24 +08:00 回复了 wm5d8b 创建的主题 › Windows › Win10 显卡掉线问题 |
有，可以尝试更新核显驱动
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