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Portable way to get file size (in bytes) in shell?
...k+execve, and it doesn't rely on secondary programming language (perl/ruby/python/whatever)
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“Cloning” row or column vectors
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Here's an elegant, Pythonic way to do it:
>>> array([[1,2,3],]*3)
array([[1, 2, 3],
[1, 2, 3],
[1, 2, 3]])
>>> array([[1,2,3],]*3).transpose()
array([[1, 1, 1],
[2, 2, 2],
[3, 3, 3]])
the proble...
How to check sbt version?
... Why does sbt sbtVersion run outside a project take 9 seconds to run? Python, node and ruby all take under a second, as do awk, sed, minibloom and a bunch of other command line tools. gcc takes one whole second, which is super-slow. But 9 seconds takes the cherry. What is sbt doing in that ...
Delete column from SQLite table
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I've made a Python function where you enter the table and column to remove as arguments:
def removeColumn(table, column):
columns = []
for row in c.execute('PRAGMA table_info(' + table + ')'):
columns.append(row[1])
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How to install the current version of Go in Ubuntu Precise
...net/~duh/+archive/golang/+packages. So basically do:
sudo apt-get install python-software-properties # 12.04
sudo add-apt-repository ppa:duh/golang
sudo apt-get update
sudo apt-get install golang
To confirm:
go version
which outputs in my case (Ubuntu precise)
go version go1.1.1 linux/amd64
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Running script upon login mac [closed]
...e job for the launchd solution - see trisweb's answer. If you can manage a python daemon, youre sure can manage an plist config file where you can manage all aspects of restarts and so on...
– jm666
Aug 11 '14 at 15:29
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Vim and Ctags tips and tricks [closed]
...t_id=1764
taglist.vim : Source code browser (supports C/C++, java, perl, python, tcl, sql, php, etc)
http://www.vim.org/scripts/script.php?script_id=273
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edited Jun...
Postgres: INSERT if does not exist already
I'm using Python to write to a postgres database:
17 Answers
17
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How to use “not” in xpath?
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None of these answers worked for me for python. I solved by this
a[not(@id='XX')]
Also you can use or condition in your xpath by | operator. Such as
a[not(@id='XX')]|a[not(@class='YY')]
Sometimes we want element which has no class. So you can do like
a[not(@...
Where do I use delegates? [closed]
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I had a project which used win32 Python.
Due to various reasons, some modules used odbc.py to access the DB, and other modules - pyodbc.py.
There was a problem when a function needed to be used by both kinds of modules. It had an connection object pas...