大约有 44,000 项符合查询结果（耗时：0.0438秒） [XML]
Dynamically set local variable [duplicate]
...ntrary to other answers already posted you cannot modify locals() directly and expect it to work.
>>> def foo():
lcl = locals()
lcl['xyz'] = 42
print(xyz)
>>> foo()
Traceback (most recent call last):
File "<pyshell#6>", line 1, in <module>
foo()
...
GCC dump preprocessor defines
Is there a way for gcc/g++ to dump its preprocessor defines from the command line?
I mean things like __GNUC__ , __STDC__ , and so on.
...
How to get the parents of a Python class?
...cked when resolving a method (or, actually, any other attribute -- methods and other attributes live in the same namespace in Python, after all;-).
share
|
improve this answer
|
...
Python: How do I make a subclass from a superclass?
...
The only reason to avoid super is if you don't understand the differences between how super works in Python, and how super/parent works in other languages. Admittedly this is not obvious to people coming from other languages, but I wouldn't conclude that that qualifies it as som...
How to ignore user's time zone and force Date() use specific time zone
...as 0 in GMT, but .toString() method shows the local time.
Big note, UTC stands for Universal time code. The current time right now in 2 different places is the same UTC, but the output can be formatted differently.
What we need here is some formatting
var _date = new Date(1270544790922);
// outp...
BaseException.message deprecated in Python 2.6
...- almost no coding needed
Just inherit your exception class from Exception and pass the message as the first parameter to the constructor
Example:
class MyException(Exception):
"""My documentation"""
try:
raise MyException('my detailed description')
except MyException as my:
print my # ...
How do I create a constant in Python?
...ng on other people's work, I have added an answer, far below, with a short and simple implementation of "Constants" for python 2.7 (which lacks "enum"). These are enum-like read-only name.attribute, and can contain any value. Declaration is easy Nums = Constants(ONE=1, PI=3.14159, DefaultWidth=100.0...
Python decorators in classes
... Test()
test.bar()
This avoids the call to self to access the decorator and leaves it hidden in the class namespace as a regular method.
>>> import stackoverflow
>>> test = stackoverflow.Test()
>>> test.bar()
start magic
normal call
end magic
>>>
edited t...
Best practice for Django project working directory structure
... I've found that it's hard to create a directory structure that works well and remain clean for every developer and administrator. There is some standard structure in most projects on github. But it does not show a way to organize another files and all projects on pc.
...
Instance attribute attribute_name defined outside __init__
...
@MericOzcan either setting a bunch of attributes to None and then setting them later in a parse_args function OR returning a short tuple from parse_args is OK. ideally, parse_args should be testable without needing a wizard instance.
– Erik Aronesty
...