python中怎么对列表以区间进行统计？

python中怎么对列表以区间进行统计？假设list=[1,1,1,2,3,4,4,5,5,6,7,7,7,7,8,9,9,9,10……99，99，99，100，100] 怎么写程序可以以10为一个区间分别统计，如统计出...

From [Pythondiscussion group] 2017-04-18 10:23:00 0  2  969

python - reload(sys)报Undefined variable: reload错误

author = 'jyang'import sysimport jsonreload(sys)sys.setdefaultencoding('utf-8')还报Undefined variable from impor...

From [Pythondiscussion group] 2017-04-18 09:03:14 0  3  969

科学计算 - python-如何使用sympy库的diff函数对自定义的多参数函数微分？

尝试自己写一个批梯度下降算法，在对cost function微分时遇到了问题。计算cost function的函数有三个参数，如何用diff来微分？ {代码...} 在batch_theta_update函数中，我要计算...

From [Pythondiscussion group] 2017-04-17 17:19:53 0  0  969

python - Problems with matplotlib's x-axis display

I recently learned pandas and data visualization and made a practice program {code...}. The problem is that wh...

From [Pythondiscussion group] 2017-07-05 10:27:12 0  1  968

python - Using Scrapy, how to request a new URL and call back the specified function?

Regarding the use of Scrapy under Python3 {code...} When I execute the above code, I cannot successfully call ...

From [Pythondiscussion group] 2017-06-28 09:25:02 0  1  968

python - django 里自定义的 login 方法，如何使用 login_required()

根据 官方文档 写了个自定义的 login 方法如下： {代码...} 那么，在如何配合 @login_required 装饰器通过我自定义的 my_login() 方法进行登录呢？

From [Pythondiscussion group] 2017-04-18 10:28:38 0  3  968

python - Flask源码异常处理问题

Flask version: 0.3 我事先在views.py里面定义了如下的异常处理方法： {代码...} 先贴几段源码 {代码...} 然后我在浏览器输入了一个不存在的路由http://localhost:5000/...

From [Pythondiscussion group] 2017-04-18 10:19:57 0  1  968

python - pycharm2.7.3无法import模块

1.问题：pycharm2.7.3无法import pyperclip模块，已经从https://pypi.python.org/pypi/...下载安装过pyperclip-1.5.27，但是仍然无法导入 2.代码： ...

From [Pythondiscussion group] 2017-04-18 09:54:40 0  2  968

Python gets part of the data from the text?

I want to remove the key:value before the first decimal in each line, and remove the key and colon of the firs...

From [Pythondiscussion group] 2017-07-05 10:35:28 0  2  967

python - website access frequency limit for accounts

When crawling a certain website, the access frequency of the account is limited. If you switch accounts, you m...

From [Pythondiscussion group] 2017-06-28 09:25:06 0  3  967

dict - python字典排序后如何保持为字典类型？

{代码...} 排序后变成了tuple，怎么才能保持为dict?

From [Pythondiscussion group] 2017-04-17 16:33:54 0  1  967

javascript - How to put json name into drop-down list?

Now I am working on two drop-down lists to select two places. The names and coordinates of the places are all ...

From [Pythondiscussion group] 2017-06-22 11:51:51 0  6  966

通过brew安装了python2.X和python3.X，python2里自带有pip工具，但是python3里木有pip3

从搜索到的资料来看，python3.X里面自带pip3工具，但是我通过brew安装python3后找不到pip3，小白一枚吗，在此跪求解决方案

From [Pythondiscussion group] 2017-04-18 10:20:50 0  4  966

Why can't project be pushed to Heroku?

Follow the tutorial to push the project to heroku. Everything went smoothly in the previous steps without any ...

From [Pythondiscussion group] 2017-07-05 10:34:52 0  1  965

python - Why does the browser console response return empty after csdn login?

Log in to csdn http://blog.csdn.net/?ref=too... I want to check the return value, but the result is empty. So ...

From [Pythondiscussion group] 2017-07-05 10:34:31 0  1  965