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Django - limiting query results
...the LIMIT 10 would be issued to the database so slicing would not occur in Python but in the database.
See limiting-querysets for more information.
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Find unique rows in numpy.array
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+1 This is clear, short and pythonic. Unless speed is a real issue, these type of solutions should take preference over the complex, higher voted answers to this question IMO.
– Bill Cheatham
Apr 30 '14 at 13:36
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What is a Lambda?
...eir own terminology. In LISP, a lambda is just an anonymous function. In Python, a lambda is an anonymous function specifically limited to a single expression; anything more, and you need a named function. Lambdas are closures in both languages.
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How to find out element position in slice?
...ll to increase programmer's productivity. And go programs looks as nice as python ones :) So why there is no a common way to do such a common task? I mean, if you want to check if container has an element you can just if element in collection: do_something()
– OCyril
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Is there a short contains function for lists?
...t you can define on any class you write and can get extremely handy to use python at his full extent.
A dumb use may be:
>>> class ContainsEverything:
def __init__(self):
return None
def __contains__(self, *elem, **k):
return True
>>> a = ContainsEver...
How do I match any character across multiple lines in a regular expression?
...difier (or (?s) inline version at the start) (demo): /(.*)<FooBar>/s
python - Use re.DOTALL (or re.S) flags or (?s) inline modifier (demo): m = re.search(r"(.*)<FooBar>", s, flags=re.S) (and then if m:, print(m.group(1)))
java - Use Pattern.DOTALL modifier (or inline (?s) flag) (demo): P...
demystify Flask app.secret_key
...esses different aspects of the scheme. The syntax used for the examples is Python3, but the concepts apply also to previous versions.
What is SECRET_KEY (or how to create a Signed Cookie)?
Signing cookies is a preventive measure against cookie tampering. During the process of signing a cookie, th...
Where should virtualenvs be created?
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If you use pyenv install Python, then pyenv-virtualenv will be a best practice. If set .python-version file, it can auto activate or deactivate virtual env when you change work folder. Pyenv-virtualenv also put all virtual env into $HOME/.pyenv/versi...
Good open source django project for learning [closed]
...ly:
Awesome Django @ https://github.com/wsvincent/awesome-django
Awesome Python @ https://github.com/vinta/awesome-python
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C++及Windows异常处理(try，catch; __try,__finally, __except) - C/C++ - ...
...往往好像接受一个函数参数一样，可以是各种类型的异常数据对象；但是__except关键字则不同，它后面跟的却是一个表达式（可以是各种类型的表达式）
下面是一个例子：
void main()
{
puts("hello");
// 定义受监控的代码模...