大约有 43,000 项符合查询结果（耗时：0.0181秒） [XML]
Calling parent class __init__ with multiple inheritance, what's the right way?
...s to greater flexibility for subclasses.
In the direct call approach, C.__init__ can call both A.__init__ and B.__init__.
When using super(), the classes need to be designed for cooperative multiple inheritance where C calls super, which invokes A's code which will also call super which invokes ...
TypeError: module.__init__() takes at most 2 arguments (3 given)
...ample.responses import Response
class GeoJsonResponse(Response):
def __init__(self, geo_json_data):
Looks fine. No problems until you try to debug the thing, which is when you get a bunch of seemingly vague error messages like this:
from pyexample.responses import GeoJsonResponse
..\py...
How do I write good/correct package __init__.py files
...
__all__ is very good - it helps guide import statements without automatically importing modules
http://docs.python.org/tutorial/modules.html#importing-from-a-package
using __all__ and import * is redundant, only __all__ is n...
Difference between global and device functions
Can anyone describe the differences between __global__ and __device__ ?
9 Answers
...
Django “xxxxxx Object” display customization in admin action sidebar
...
__unicode__ does do that. Your model should look something like this:
class SomeModel(models.Model):
def __unicode__(self):
return 'Policy: ' + self.name
On Python 3 you need to use __str__:
def __str__(self):
...
Why aren't python nested functions called closures?
...variable from an enclosing scope that has finished its execution.
def make_printer(msg):
def printer():
print msg
return printer
printer = make_printer('Foo!')
printer()
When make_printer is called, a new frame is put on the stack with the compiled code for the printer function a...
Approximate cost to access various caches and main memory?
...opy of a line. But remember, Intel uses MESIF (en.wikipedia.org/wiki/MESIF_protocol) for NUMA, AMD uses MOESI. I think within a single socket, though, MESIF isn't really a thing because data comes from L3, not core->core. So it's probably more relevant for L3 cache->cache transfers across s...
PHP function overloading
...c function that takes in a variable number of arguments. You would use func_num_args() and func_get_arg() to get the arguments passed, and use them normally.
For example:
function myFunc() {
for ($i = 0; $i < func_num_args(); $i++) {
printf("Argument %d: %s\n", $i, func_get_arg($i))...
Class method differences in Python: bound, unbound and static
... and unbound methods.
Basically, a call to a member function (like method_one), a bound function
a_test.method_one()
is translated to
Test.method_one(a_test)
i.e. a call to an unbound method. Because of that, a call to your version of method_two will fail with a TypeError
>>> a_tes...
Solving “Who owns the Zebra” programmatically?
...all drink different drinks.
# They all smoke different cigarettes.
for vars_ in (colors, nationalities, pets, drinks, cigarettes):
problem.addConstraint(AllDifferentConstraint(), vars_)
# In the middle house they drink milk.
#NOTE: interpret "middle" in a numerical sense (not geometrical)
probl...