python - flask sqlalchemy migrate how to ignore existing tables or fields

As the title states, when I upgrade, I get the error sqlalchemy.exc.OperationalError: (_mysql_exceptions.Opera...

From [Pythondiscussion group] 2017-05-18 10:44:36 0  1  1004

Problems with python lxml parsing Chinese

Using lxml to capture Chinese characters, the result is very painful, I don’t know how to deal with it... {cod...

From [Pythondiscussion group] 2017-05-18 10:44:31 0  2  607

An error occurs when using python's wmi for remote connection.

{code...} {code...} Traceback (most recent call last): File "D:/untitled/丶������.py", line 11, in ca...

From [Pythondiscussion group] 2017-05-18 10:44:27 0  2  1373

python - pyinstaller packaging problem

The program works normally before packaging, but crashes when executed after packaging. The modules used in th...

From [Pythondiscussion group] 2017-05-18 10:44:02 0  2  1148

Questions for beginners learning python. About the difference between %d and %s

The first piece of code: {code...} The execution result of the first piece of code: =========== Separator ====...

From [Pythondiscussion group] 2017-05-18 10:43:55 0  2  665

python - 我已经连上了美国的VPN，而且在浏览器里查看的game排行也是美国的，可是为啥我用代码怎么爬都是中国地区排行

-encoding:utf-8--import requests, xlwt, sysfrom bs4 import BeautifulSoup reload(sys)sys.setdefaultencoding('ut...

From [Pythondiscussion group] 2017-04-18 10:34:59 0  2  1110

Python3 smtp 邮件发送失败

{代码...} Connected to pydev debugger (build 162.1967.10)Traceback (most recent call last): File "F:JetBrai...

From [Pythondiscussion group] 2017-04-18 10:34:58 0  1  1259

python - xpath提取网页路径没问题，但是缺失内容？

{代码...}

From [Pythondiscussion group] 2017-04-18 10:34:56 0  1  721

想写一个python分析统计apache 日志文件的脚本

想写一个python分析统计apache 网站日志文件并将统计后的数据存入mysql中的的脚本，有没有参考的，没有思路主要是统计 哪些url被爬取了 及 被爬取次数，以及IP这两个

From [Pythondiscussion group] 2017-04-18 10:34:55 0  1  618

python sqlalchemy create_engine问题

{代码...} 我知道常规的语句大概是这样，如下engine = create_engine('mysql+mysqldb://scott:tiger@localhost/foo') 但是我们老大设置密码的时候，密码最后...

From [Pythondiscussion group] 2017-04-18 10:34:54 0  1  956

python requests 访问接口 报错 [Errno -2] Name or service not known

1.有几个公开的api接口，我是通过requests 访问的频率比较大，因为需要监控状态。而且还是多进程。就会报这个错误 Vm operation - HTTPConnectionPool(host='*', port=...

From [Pythondiscussion group] 2017-04-18 10:34:53 0  0  1512

python - pip 不能安装包

如图：

From [Pythondiscussion group] 2017-04-18 10:34:52 0  3  570

算法 - 如何使用python计算2个毫秒级字符串的计算

比如从源头数据可以获得2个时间，其形式为"2017-03-09 08:51:51 615""2017-03-09 08:52:21 601"要计算前后者的时间差 自己百度搜索了很多...

From [Pythondiscussion group] 2017-04-18 10:34:51 0  3  680

javascript - win7 install node-sass出错，提示not found: python2

构建vue.js项目，下载依赖的node-sass模块。但不管npm install还是单独npm install node-sass都报找不到python的错误。 {代码...} 重点是我本地已经安装了Python了 ...

From [Pythondiscussion group] 2017-04-18 10:34:50 0  5  1473

web - 怎样在网页上运行Python脚本？

我想做的是一个动态网页，用户在网站上做出一些选项后，会传入一些参数给本地的Python脚本并运行该脚本，再返回一些数据呈现在网页上。我知道通过django或者flask框架都可以实现，但是由于赶时间来不及学整个框架...

From [Pythondiscussion group] 2017-04-18 10:34:49 0  8  1363