python - string.Template与str.format()为什么同时存在

这两段代码的效果是一样的: {代码...} 与 {代码...} 我的问题是, string.Template与str.format谁的历史更久? 为什么会出现功能一样的库呢? 是不是一个是另一个的替代品呢?

From [Pythondiscussion group] 2017-04-18 09:29:24 0  2  1021

linux - 直接python程序运行没有问题，nohup运行就出错了，该怎么解决啊？

小弟，运行一个websocket的程序，用的是tornado的库，一行命令python server.py & 就可以了。我想关掉ssh终端时进程不被杀死，因此用了nohup，出现了如下图所示的错误，求解...

From [Pythondiscussion group] 2017-04-18 09:24:27 0  5  1021

python 如何把'a=b'这样的字符解析成dict类型

比如: 'a=b'这样的字符数据，转换成python中的dict类型，{'a':'b'}。

From [Pythondiscussion group] 2017-04-17 11:50:43 0  5  1021

python - scrapy captures duplicate content of CNKI response

Traversing the url {code...} that requests page turning, the response request is successful, but the content i...

From [Pythondiscussion group] 2017-06-30 09:55:07 0  3  1020

python - In regular expressions, if the second half of the matched string happens to be the first half of the next matched string, how to implement it?

I was reviewing the re module recently, and suddenly I thought of this question, that is, if the second half o...

From [Pythondiscussion group] 2017-06-12 09:27:43 0  1  1020

Jinja2 template syntax macro error - Stack Overflow

{Code...} Macros are used in the jinja2 template syntax, but an error is reported. The problem is that the nam...

From [Pythondiscussion group] 2017-06-12 09:25:17 0  1  1020

python - 在PeeWee中如何用join链接两张没有外键关系的表

需要用两张表做链接查询，sql 语句如下： {代码...} 但是B表中只有两列，一个是主键，且不能在peewee中与A外键关系，这个查询要怎么在PEEWEE中实现呢？

From [Pythondiscussion group] 2017-04-18 09:54:53 0  0  1020

python - 判断是否在字典里用in还是用has_key()

这两个都是一样的结果呢 {代码...}

From [Pythondiscussion group] 2017-04-17 11:08:18 0  3  1020

Regarding the problem of counting the number of different numerical types in a list of integers in Python.

In the following code, kind_num is used to count the integers with several different values ​​in the integer l...

From [Pythondiscussion group] 2017-06-22 11:52:27 0  3  1019

May I ask why in Python, when I use a for loop to assign a value to a nested list, it is always calculated based on the final value of i?

There are two examples, the first one is as follows, {code...} At this time, a=[3,4,5,6,7] and the second one ...

From [Pythondiscussion group] 2017-06-12 09:25:09 0  3  1019

python - POST上传的excel(xls)文件,如何直接读进pandas，避免写入到磁盘？

From [Pythondiscussion group] 2017-04-18 09:38:44 0  2  1019

python - 有没有提供用经度纬度查询天气的服务？

有没有提供用经度纬度查询天气的服务？ 或者有那些比较好的实现方式？

From [Pythondiscussion group] 2017-04-17 13:51:42 0  3  1019

python - HTTP Error 599

问题描述 爬取小米应用商店的某款应用时，出现 599 报错： {代码...} 待爬取的链接为：http://app.mi.com/search?keywords=%E6%8B%9B%E5%95%86%E9%93%B6%E...

From [Pythondiscussion group] 2017-04-18 09:52:37 0  5  1018

python用requests递归查询页面 报错 ChunkedEncodingError

我想用递归的方式查询一个网页下面的所有后续页面 /index.php /index_2.php 这样。 {代码...} 运行后报错 提示 equests.exceptions.ChunkedEncodingError: ...

From [Pythondiscussion group] 2017-04-18 09:43:00 0  4  1018

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：im...

From [Pythondiscussion group] 2016-11-11 15:31:03 0  1  1018