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class method generates “TypeError: … got multiple values for keyword argument …”
...de:
myfoo.foodo("something")
print
print myfoo
You'll output like:
<__main__.foo object at 0x321c290>
a thong is something
<__main__.foo object at 0x321c290>
You can see that 'thing' has been assigned a reference to the instance 'myfoo' of the class 'foo'. This section of the docs...
How do I clone a Django model instance object and save it to the database?
...imary key of your object and run save().
obj = Foo.objects.get(pk=<some_existing_pk>)
obj.pk = None
obj.save()
If you want auto-generated key, set the new key to None.
More on UPDATE/INSERT here.
Official docs on copying model instances: https://docs.djangoproject.com/en/2.2/topics/db/que...
setTimeout / clearTimeout problems
...nswered Jul 31 '17 at 21:45
zero_coolzero_cool
2,64333 gold badges2727 silver badges3737 bronze badges
...
Bogus foreign key constraint fail
...each query (bugs.mysql.com/bug.php?id=8280), making it neccessary to write all the drop statements in one query, eg.
SET FOREIGN_KEY_CHECKS=0;
DROP TABLE my_first_table_to_drop;
DROP TABLE my_second_table_to_drop;
SET FOREIGN_KEY_CHECKS=1;
Where the SET FOREIGN_KEY_CHECKS=1 serves as an extr...
PHP how to get local IP of system
...
This is the solution that worked for me and that avoids calling shells, operating system commands and all sorts of stuff that can open security holes or raise odd issues later.
– Dario Fumagalli
Jul 17 '14 at 10:59
...
c++获取windows程序的版本号 - C/C++ - 清泛网 - 专注C/C++及内核技术
...e <windows.h>
#include <atlstr.h>
#pragma comment(lib, "version")
int _tmain(int argc, _TCHAR* argv[])
{
LPCTSTR lpszModuleName = _T("C:\\Windows\\notepad.exe");
// Get the version information size for allocate the buffer
DWORD dwHandle;
DWORD dwDataSize = ::GetFileVersionIn...
一个宏命令，就可以程序崩溃时生成dump文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...pFile
{
void CreateDumpFile(LPCWSTR lpstrDumpFilePathName, EXCEPTION_POINTERS *pException)
{
// 创建Dump文件
//
HANDLE hDumpFile = CreateFile(lpstrDumpFilePathName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
//...
vc/mfc *通配符 批量删除文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...使用SHFileOperation函数：#include "stdafx.h"#include <windows.h>int _tmain(int argc, _TCHAR*...直接上代码，可直接运行亲测有效，使用SHFileOperation函数：
#include "stdafx.h"
#include <windows.h>
int _tmain(int argc, _TCHAR* argv[])
{
LPTSTR delFileName = L"c...
error LNK2019: 无法解析的外部符号 _Netbios@4,该符号在函数 中被引用 - C...
error LNK2019: 无法解析的外部符号 _Netbios@4,该符号在函数 中被引用解决方法如下：Cpp文件include语句之后加上如下代码：#pragma comment(lib,"netapi32.lib")解决方法如下：
Cpp文件include语句之后加上如下代码：
#pragma comment(lib,"netapi32.lib")
...
mfc 按钮变成了非xp风格、界面变成windows经典样式的原因总结 - C/C++ - 清...
...xp风格 xp风格stdafx.h中添加：#ifdef _UNICODE#if defined _M_IX86#pragma co...首先看一下xp风格与非xp风格：
非xp风格 xp风格
stdafx.h中添加：
#ifdef _UNICODE
#if defined _M_IX86
#pragma comment(lin...