A python novice wants to make a code that can calculate pi, but I don't know how to write it.

I wrote a piece of code that can calculate the factorial of a number, as follows: {Code...} Here, change while...

From [Pythondiscussion group] 2017-06-12 09:21:09 0  1  1045

aiohttp is installed in python3, but the import still fails when entering python3.

The virtual machine environment is Ubuntu - 64-bit pip is installed under python3. When using pip to install a...

From [Pythondiscussion group] 2017-06-28 09:22:08 0  2  1044

?P<sign>.*中的p是什么意思呢

m = re.match(r'(\w+) (\w+)(?P<sign>.*)', 'hello world!')这句代码中的?...

From [Pythondiscussion group] 2016-11-09 15:13:48 0  2  1044

python的pymysql如何插入date类型的字段

用pymysql插入mysql数据库值，关于date字段，需要将str转换成date，变换了好几种写法，也查了很久，不是报语法错误，就是插入的日期不对请教正确的写法code=1date='2016-03-01'inser...

From [Pythondiscussion group] 2017-04-17 17:51:36 0  1  1043

python - pycharm中中文列表输出\xe5\xb0\x8f之类的怎么解决

{代码...} 结果为：['\xe5\xb0\x8f', '\xe5\xa4\xa7', '\xe5\xb0\x8f']小打小闹 问：怎么解决列表输出的编码问题

From [Pythondiscussion group] 2017-04-17 17:29:06 0  2  1043

python - [Django] How to get user information for each template

For example, if you use Django to build a website, most pages will contain user information, such as username,...

From [Pythondiscussion group] 2017-07-05 10:34:29 0  5  1042

python - 用os.environ能获取到的环境变量，在os.environ.getenv却得不到，这是为什么？

{代码...} 用os.environ能获取到的FLASK_CONFIG，在os.environ.getenv却得不到这是为什么？怎么办？

From [Pythondiscussion group] 2017-04-18 10:21:07 0  2  1042

网页爬虫 - python爬虫爬取携程网的酒店评论数据时，有个请求参数不知道是怎么生成的？

比如这个酒店：http://hotels.ctrip.com/hotel/dianping/1943326.html酒店的点评数据是通过ajax方式异步加载的，不想用模拟浏览器的方式来爬，太慢了，想直接请求点评数据的地址...

From [Pythondiscussion group] 2017-04-18 09:24:53 0  4  1042

python - 抓取下的unicode编码转urlcode

{代码...} 我想把sgg+item.extract() 转换为字符串.转换为urlcode.发送出去. 不过我碰到问题是这个 articles=response.css("#content &gt;...

From [Pythondiscussion group] 2017-04-17 17:56:29 0  1  1042

python - 使用flask-socketIO怎样讲json格式数据从服务器推送到前端？

小弟近日接触flask框架的socketio模块，用以下代码测试了下效果，发现字符串信息能够从服务器异步加载到客户端并显示在网页上，但是换成json类型的就不行，浏览器会报错 Uncaught TypeError: Ca...

From [Pythondiscussion group] 2017-04-17 17:19:59 0  2  1041

python flask 如何使用cookie,第一次访问index时，重定向到login

# -*- coding:utf-8 -*- from flask import Flask,redirect app = Flask(__...

From [Pythondiscussion group] 2016-10-22 15:56:44 0  1  1041

python - Convert part of string type in multidimensional list to integer type

shell.txta1 b1 0.2 0a1 c1 0.8 0b1 c1 0.7 0a2 b2 1 0a2 d2 0.4 0d2 b2 0.6 0a1 a2 1 1a2 a1 0.1 1b1 b2 0.5 1b2 b1 ...

From [Pythondiscussion group] 2017-05-18 11:02:13 0  1  1040

Python crawls the data and gets a list, but how to remove the span tag in it?

I used p6ython3.6 to crawl some data, but what was finally displayed was a list containing span tags. When I u...

From [Pythondiscussion group] 2017-05-18 10:55:53 0  3  1040

python 2.7 如何实现http post多并发？

注意是python 2.7, (multiprocessing值支持到2.6,2.7下安装会报错) 用threadpool试了一下，总是报错： 单次并发的函数 {代码...} 结果处理函数，只是打印出来 {代码...} ...

From [Pythondiscussion group] 2017-04-18 10:18:50 0  2  1040

Command error

app.config.from_object('config')报错ModuleNotFoundError: No module named 'config'

From [Pythondiscussion group] 2018-11-06 17:04:13 0  0  1039