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How can I return two values from a function in Python?
...the function twice.
Values aren't returned "in variables"; that's not how Python works. A function returns values (objects). A variable is just a name for a value in a given context. When you call a function and assign the return value somewhere, what you're doing is giving the received value a nam...
How do I watch a file for changes?
...ou already looked at the documentation available on http://timgolden.me.uk/python/win32_how_do_i/watch_directory_for_changes.html? If you only need it to work under Windows the 2nd example seems to be exactly what you want (if you exchange the path of the directory with the one of the file you want ...
比起创业孵化器 双创中国更急需的是创业教育 - 资讯 - 清泛网 - 专注C/C++...
...rek邀请的分享嘉宾中，多数会直接分享其商业逻辑和业务数据等核心要点，包括发展过程中的独门绝技和经验。而在中国，这些差异化的思维理念和方法，特别是商业逻辑，一旦公开，第二天就有超出你想象数量的山寨项目出现...
Rails detect if request was AJAX
...equest.xhr?
Returns true if the “X-Requested-With” header contains “XMLHttpRequest”....
But BEWARE that
request.xhr?
returns numeric or nil values not BOOLEAN values as the docs say, in accordance with =~.
irb(main):004:0> /hay/ =~ 'haystack'
=> 0
irb(main):006:0> /stack/ =...
Amazon S3 CORS (Cross-Origin Resource Sharing) and Firefox cross-domain font loading
...S config can shed some lights on this, it'll be greatly appreciated.
<?xml version="1.0" encoding="UTF-8"?>
<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<CORSRule>
<AllowedOrigin>https://mydomain.com</AllowedOrigin>
<Allowe...
How to read an external local JSON file in JavaScript?
...
If you have python installed you can use command line python -m SimpleHTTPServer 8888 and open http://localhost:8888/ in your browser (Windows or Mac). 8888 is the port and can be changed.
– geotheory
...
What is the exact problem with multiple inheritance?
...upport multiple inheritance. So when someone like Guido van Rossum designs python, or when Anders Hejlsberg designs c#, they know that supporting multiple inheritance is going to make the compiler implementations significantly more complex, and presumably they don't think the benefit is worth the co...
type object 'datetime.datetime' has no attribute 'datetime'
...import datetime
>>> datetime
<module 'datetime' from '/usr/lib/python2.6/lib-dynload/datetime.so'>
>>> datetime.datetime(2001,5,1)
datetime.datetime(2001, 5, 1, 0, 0)
But, if you import datetime.datetime:
>>> from datetime import datetime
>>> datetime
<...
Creating a new user and password with Ansible
...st be hashed.
- hosts: all
user: root
vars:
# created with:
# python -c 'import crypt; print crypt.crypt("This is my Password", "$1$SomeSalt$")'
password: $1$SomeSalt$UqddPX3r4kH3UL5jq5/ZI.
tasks:
- user: name=tset password={{password}}
If your playbook or ansible command l...
NumPy: function for simultaneous max() and min()
... can optimize this.
Here's some fortran code which can be compiled into a python module via f2py (maybe a Cython guru can come along and compare this with an optimized C version ...):
subroutine minmax1(a,n,amin,amax)
implicit none
!f2py intent(hidden) :: n
!f2py intent(out) :: amin,amax
!...