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Python argparse: How to insert newline in the help text?
I'm using argparse in Python 2.7 for parsing input options. One of my options is a multiple choice. I want to make a list in its help text, e.g.
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django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb
... do i have a version problem by any chance? I am using django 1.5 , python 2.7.3 with my sql(14.14 for debian)
– getitstarted
Mar 10 '13 at 0:57
4
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Limiting floats to two decimal points
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The built-in round() works just fine in Python 2.7 or later.
Example:
>>> round(14.22222223, 2)
14.22
Check out the documentation.
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Upgrade python in a virtualenv
...or me. I think you may have some problems if you change from python 2.6 to 2.7 or 2.7 to 3.x but if you just upgrade inside the same version (staying at 2.7 as you want) you shouldn't have any problem, as all the packages are held in the same folders for both python versions (2.7.x and 2.7.y package...
淘宝应对双\"11\"的技术架构分析 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
淘宝应对双"11"的技术架构分析双11最热门的话题是TB，最近正好和阿里的一个朋友聊淘宝的技术架构，发现很多有意思的地方，分享一下他们的解析资料：淘宝海量数据产品技术... 双“11”最热门的话题是TB ，最近正好和阿里的...
搭建高可用mongodb集群（四）—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...下：
public class TestMongoDBShards {
public static void main(String[] args) {
try {
List addresses = new ArrayList();
ServerAddress address1 = new ServerAddress("192.168.0.136" , 20000);
ServerAddress address2...
Finding all possible combinations of numbers to reach a given sum
...tinue
for i in range(len(numbers)):
n = numbers[i]
remaining = numbers[i+1:]
subset_sum(remaining, target, partial + [n])
if __name__ == "__main__":
subset_sum([3,9,8,4,5,7,10],15)
#Outputs:
#sum([3, 8, 4])=15
#sum([3, 5, 7])=15
#sum([8, 7])=15
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MediaNotification 媒体通知扩展：管理媒体播放器通知，支持播放控制 · Ap...
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Can I install Python 3.x and 2.x on the same Windows computer?
...ons" option enabled. I'm not quite sure why, but on my machine it left Py 2.7 as the "default" (of the launcher).
Running scripts by calling them directly from the command line will route them through the launcher and parse the shebang (if it exists). You can also explicitly call the launcher and...
How do I create a dictionary with keys from a list and values defaulting to (say) zero? [duplicate]
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dict((el,0) for el in a) will work well.
Python 2.7 and above also support dict comprehensions. That syntax is {el:0 for el in a}.
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