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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  1113

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  686

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  1500

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  1276

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  757

python - 我已經(jīng)連上了美國的VPN，而且在瀏覽器里查看的game排行也是美國的，可是為啥我用代碼怎么爬都是中國地區(qū)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  1173

Python3 smtp 郵件發(fā)送失敗

{代碼...} 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  1349

python - xpath提取網(wǎng)頁路徑?jīng)]問題，但是缺失內(nèi)容？

{代碼...}

From [Pythondiscussion group] 2017-04-18 10:34:56 0  1  767

想寫一個python分析統(tǒng)計apache 日志文件的腳本

想寫一個python分析統(tǒng)計apache 網(wǎng)站日志文件并將統(tǒng)計后的數(shù)據(jù)存入mysql中的的腳本，有沒有參考的，沒有思路主要是統(tǒng)計 哪些url被爬取了 及 被爬取次數(shù)，以及IP這兩個

From [Pythondiscussion group] 2017-04-18 10:34:55 0  1  664

python sqlalchemy create_engine問題

{代碼...} 我知道常規(guī)的語句大概是這樣，如下engine = create_engine('mysql+mysqldb://scott:tiger@localhost/foo') 但是我們老大設置密碼的時候，密碼最后...

From [Pythondiscussion group] 2017-04-18 10:34:54 0  1  1015

python requests 訪問接口 報錯 [Errno -2] Name or service not known

1.有幾個公開的api接口，我是通過requests 訪問的頻率比較大，因為需要監(jiān)控狀態(tài)。而且還是多進程。就會報這個錯誤 Vm operation - HTTPConnectionPool(host='*', port=...

From [Pythondiscussion group] 2017-04-18 10:34:53 0  0  1623

python - pip 不能安裝包

如圖：

From [Pythondiscussion group] 2017-04-18 10:34:52 0  3  632

算法 - 如何使用python計算2個毫秒級字符串的計算

比如從源頭數(shù)據(jù)可以獲得2個時間，其形式為"2017-03-09 08:51:51 615""2017-03-09 08:52:21 601"要計算前后者的時間差 自己百度搜索了很多...

From [Pythondiscussion group] 2017-04-18 10:34:51 0  3  764

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

構建vue.js項目，下載依賴的node-sass模塊。但不管npm install還是單獨npm install node-sass都報找不到python的錯誤。 {代碼...} 重點是我本地已經(jīng)安裝了Python了 ...

From [Pythondiscussion group] 2017-04-18 10:34:50 0  5  1538

web - 怎樣在網(wǎng)頁上運行Python腳本？

我想做的是一個動態(tài)網(wǎng)頁，用戶在網(wǎng)站上做出一些選項后，會傳入一些參數(shù)給本地的Python腳本并運行該腳本，再返回一些數(shù)據(jù)呈現(xiàn)在網(wǎng)頁上。我知道通過django或者flask框架都可以實現(xiàn)，但是由于趕時間來不及學整個框架...

From [Pythondiscussion group] 2017-04-18 10:34:49 0  8  1438