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How do I get a list of column names from a psycopg2 cursor?
...query, you can query the information_schema.columns table.
#!/usr/bin/env python3
import psycopg2
if __name__ == '__main__':
DSN = 'host=YOUR_DATABASE_HOST port=YOUR_DATABASE_PORT dbname=YOUR_DATABASE_NAME user=YOUR_DATABASE_USER'
column_names = []
with psycopg2.connect(DSN) as connection...
How do you do a simple “chmod +x” from within python?
...
Here is a version that simulates that behavior exactly:
#!/usr/bin/env python3
import os
import stat
def get_umask():
umask = os.umask(0)
os.umask(umask)
return umask
def chmod_plus_x(path):
os.chmod(
path,
os.stat(path).st_mode |
(
(
...
支撑Github的开源技术 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...管理工具，可以通过bower install 的形式将常用的前端资源下载到本地的项目目录中，例如：bower install bootstrap将会自动下载bootstrap的项目资源到本地的项目目录中，不需要自己手动来下载、移动资源文件，并且通过配置文件可以...
ImportError: No module named apiclient.discovery
... python-googleapi python-oauth2client and the command sudo apt-get install python3-googleapi python3-oauth2client. It worked perfect and I prefer this way because I have enough with one package manager.
– Gerard
Jul 28 '19 at 11:45
...
bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml. Do you need
... and I had the same original error in this post. After I ran the command:
python3 -m pip install lxml
it resolved my problem
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What is the easiest way to get current GMT time in Unix timestamp format?
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python2 and python3
it is good to use time module
import time
int(time.time())
1573708436
you can also use datetime module, but when you use strftime('%s'), but strftime convert time to your local time!
python2
from datetime i...
提升速度：XP注册表与驱动优化 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...户是非常有好处的——释放了保留的带宽可加快上网浏览下载的速度!
6、Windows XP不检查预定任务
通常情况下，当Windows XP连接到其它计算机时，会检查对方机子上所有预定的任务，这个过程会让你等上30秒钟，实在太讨厌了。...
C++ 读写xml方法整理（持续更新） - C/C++ - 清泛网 - 专注C/C++及内核技术
...太多了，这里对常用的几种做一个总结，附demo。1、Markup 下载：
特点：C++编写的，一个.h，一个.cpp，绿色小巧，直接加入工程源码编译，只支持MFC。
<?xml version="1.0" encoding="utf-8"?>
<root>
<update ver="1.2.0" pkg="setup.exe" force="1"/>
...
python exception message capturing
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@CharlieParker in Python3 write except Exception as e:
– eumiro
Nov 1 '17 at 5:38
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How to pick just one item from a generator?
...ething special in case of end-of-generator.
Note on next() / .next():
In Python3 the .next() method was renamed to .__next__() for good reason: its considered low-level (PEP 3114). Before Python 2.6 the builtin function next() did not exist. And it was even discussed to move next() to the operator...