大约有 40,000 项符合查询结果（耗时：0.0466秒） [XML]
Unique BooleanField value in Django?
... save method of the model and if you've set the boolean to True, make sure all others are set to False.
from django.db import transaction
class Character(models.Model):
name = models.CharField(max_length=255)
is_the_chosen_one = models.BooleanField()
def save(self, *args, **kwargs):
...
Cross-Origin Request Headers(CORS) with PHP headers
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Access-Control-Allow-Headers does not allow * as accepted value, see the Mozilla Documentation here.
Instead of the asterisk, you should send the accepted headers (first X-Requested-With as the error says).
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What is the Python equivalent of static variables inside a function?
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there is only one instance of foo - this one function. all invocations access the same variable.
– Claudiu
Nov 10 '08 at 23:49
124
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How to compile python script to binary executable
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Or use PyInstaller as an alternative to py2exe. Here is a good starting point. PyInstaller also lets you create executables for linux and mac...
Here is how one could fairly easily use PyInstaller to solve the issue at hand:
pyinstall...
JSON datetime between Python and JavaScript
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The lambda can be adapted to call the base implementation on non-datetime types, so TypeError can be raised if needed: dthandler = lambda obj: obj.isoformat() if isinstance(obj, datetime) else json.JSONEncoder().default(obj)
– Pascal...
Play a Sound with Python [duplicate]
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Avoid oss, it's old. I don't think I even have it installed anymore.
– Jeffrey Aylesworth
Jan 30 '10 at 19:47
8
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How to allocate aligned memory only using the standard library?
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Original answer
{
void *mem = malloc(1024+16);
void *ptr = ((char *)mem+16) & ~ 0x0F;
memset_16aligned(ptr, 0, 1024);
free(mem);
}
Fixed answer
{
void *mem = malloc(1024+15);
void *ptr = ((uintptr_t)mem+15) & ~ (uintptr_t)0x0...
How do I move to end of line in Vim?
I know how to generally move around in command mode, specifically, jumping to lines, etc. But what is the command to jump to the end of the line that I am currently on?
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How can I custom-format the Autocomplete plug-in results?
...ue, redefining an internal function in a library, I have come to learn is called monkey-patching. Here's how I did it:
function monkeyPatchAutocomplete() {
// don't really need this, but in case I did, I could store it and chain
var oldFn = $.ui.autocomplete.prototype._renderItem;
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Open URL in same window and in same tab
...ute target= of tag a. In fact, you can name your window whatever you like. All what you need is set it different value, so that it won't open in the same window or tab.
– ijse
Dec 10 '11 at 14:57
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