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python - Encountered a problem when crawling images. urllib.request.urlretrieve failed to download to the specified folder?

There is no problem if you download to the D drive, but there is a problem if you download to the directory I ...

From [Pythondiscussion group] 2017-05-18 10:54:50 0  1  2215

python - pycharm reports an error when running: unable to load the file system codec ImportError?

I have installed several versions of python before, but I uninstalled them all because they felt too messy. No...

From [Pythondiscussion group] 2017-05-18 10:54:04 0  2  2199

shadowsocks - python中hasattr(sys, "frozen")是什么意思?

最近在看shadowsocks源代碼,有些地方不是很懂,比如如下代碼中的frozen是啥意思?官方文檔沒(méi)有查到~ {代碼...}

From [Pythondiscussion group] 2017-04-18 09:43:58 0  1  2182

java - 如何設(shè)計(jì)帶時(shí)間限制的激活碼?

我做了個(gè)軟件,想用激活碼方式授權(quán),有些只想授權(quán)1個(gè)星期,光是授權(quán)的話,用MD5做加密的,但是怎么讓激活碼帶著授權(quán)時(shí)間讓程序識(shí)別呢?請(qǐng)教大神們

From [Pythondiscussion group] 2017-04-18 10:29:43 0  13  2151

java - 浮點(diǎn)數(shù)如何比較是否相等或者如何判斷某個(gè)浮點(diǎn)數(shù)是否為0？

大家應(yīng)該都知道浮點(diǎn)數(shù)存在精度問(wèn)題，所以問(wèn)題就來(lái)了，我如何才能判斷兩個(gè)數(shù)是否近似相等，或者某個(gè)浮點(diǎn)數(shù)是否為0。其實(shí)這是一個(gè)問(wèn)題，對(duì)于前者，我們需要二者作差，然后與0進(jìn)行比較。這樣前者與后者就是同一個(gè)問(wèn)...

From [Pythondiscussion group] 2017-04-18 10:18:47 0  3  2146

ubuntu16.04安裝uwsgi問(wèn)題

pip3 install uwsgi安裝好后輸入uwsgi就出現(xiàn)如下錯(cuò)誤：*** Starting uWSGI 2.0.12-debian (64bit) on ...

From [Pythondiscussion group] 2016-10-28 15:02:22 0  1  2141

python - Application doubts about Alibaba crawler source code

1. Current problem: Nothing happens when I run the py file. What is the problem? 2. I am a complete novice, I ...

From [Pythondiscussion group] 2017-06-22 11:51:27 0  1  2134

代碼規(guī)范 - Python代碼，你會(huì)嚴(yán)格遵守PEP8嗎？

Python代碼，你會(huì)嚴(yán)格遵守PEP8嗎？比如代碼一行不超過(guò)79個(gè)字符，如果正好是80個(gè)字符，你會(huì)為了遵守PEP8而對(duì)代碼進(jìn)行調(diào)整嗎？

From [Pythondiscussion group] 2017-04-17 13:05:05 0  27  2132

python autopy3 ValueError: Point out of bounds

autopy3 執(zhí)行： {代碼...} 報(bào)錯(cuò)： {代碼...} 求大神解答

From [Pythondiscussion group] 2017-04-18 10:15:30 0  1  2123

python錯(cuò)誤 __str__() Takes 0 positional arguments but 1 was given

{Code...} Error message: Google translated it and said it takes 0 positional parameters, but it gives 1. I don...

From [Pythondiscussion group] 2017-06-15 09:22:17 0  1  2118

python - "AttributeError: 'dict' object has no attribute 'filename'"

python2.7版本，使用Pycharm運(yùn)行python項(xiàng)目的gui.py文件時(shí)提示app.py的第17行代碼（也就是filename = i.file.filename）出錯(cuò)，錯(cuò)誤信息：AttributeError:...

From [Pythondiscussion group] 2017-04-18 10:27:28 0  1  2096

python - 文件按條件將多行合并為一行？

在這個(gè)test文件里。如果ID和DATE都相等，那么把他們合并到一行。ID,NAME,GENDER,AGE,KESHI,DATE,TYPE,DIAG保留第一行的值就好，PROJ_1至RE_6有值的話就依次往后面添加成一行...

From [Pythondiscussion group] 2017-04-17 17:35:21 0  2  2094

python - uwsgi 安裝報(bào)錯(cuò)

pip install uwsgi 失敗 {代碼...}

From [Pythondiscussion group] 2017-04-18 09:34:19 0  1  2089

python - 在一個(gè)try語(yǔ)句中不能同時(shí)使用except和finally子句？

{代碼...} 除非是我對(duì)《python基礎(chǔ)教程》上面這句話理解有問(wèn)題，這段代碼運(yùn)行完全沒(méi)有問(wèn)題，求解惑。

From [Pythondiscussion group] 2017-04-17 11:35:14 0  3  2079

python - 如何在目錄下按照一定順序提取出指定的文件名？

{代碼...} 以上是一個(gè)目錄下的文件名，如何能將tvmticket.log、tvmticket.log.1、tvmticket.log.2 這3個(gè)文件的文件名提取出來(lái)存放在列表中，并且存放的順序是['tvmticket...

From [Pythondiscussion group] 2017-04-18 10:28:09 0  1  2067