代码运行过慢问题

[sjdl233]

这段代码在n=5以上运行速度很慢，我尝试过将hw代码用字符串方式撰写，速度会快，请问这是为什么

[anine09]

同学，我建议你先用markdown格式吧缩进体现出来先，我们无法阅读你的代码

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________________________________ From: sjdl233 ***@***.***> Sent: Tuesday, October 24, 2023 4:53:57 PM To: datawhalechina/learn-python-the-smart-way-v2 ***@***.***> Cc: Subscribed ***@***.***> Subject: [datawhalechina/learn-python-the-smart-way-v2] 代码运行过慢问题 (Discussion #27) import ast n = ast.literal_eval(input()) def hw(n): #回文数 a=0 while n>a: a=a*10+n%10 n//=10 if n==a or n==a//10: return True else: return False def zs(num): #质数 if num < 2: return False for i in range(2, int(num ** 0.5) + 1): if num % i == 0: return False return True def hz(n): i=0 c=-1 while True: i=i + 1 if i>11 and i<101: i=101 if hw(i) and zs(i): c=c + 1 if c==n: return i print(hz(n)) 这段代码在n=5以上运行速度很慢，我尝试过将hw代码用字符串方式撰写，速度会快，请问这是为什么 ― Reply to this email directly, view it on GitHub<#27>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AHFTSDPE66QFPAYAXWAZAB3YA562LAVCNFSM6AAAAAA6NKZX36VHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZVG43TCNJWHE>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[sjdl233]

[anine09]

你的字符串格式撰写是什么意思呢？麻烦详细描述一下。

[sjdl233]

return str(n)[::-1] == str(n)

[sjdl233]

哦哦，我发现了，是我if缩进缩多了，抱歉抱歉，打扰了