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delete_all vs destroy_all?
...ave a user whose user ID is across many tables. I want to delete this user and every record that has his ID in all tables.
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How to add multiple objects to ManyToMany relationship at once in Django ?
...mber of arguments, not a list of them.
add(obj1, obj2, obj3, ...)
To expand that list into arguments, use *
add(*[obj1, obj2, obj3])
Addendum:
Django does not call obj.save() for each item but uses bulk_create(), instead.
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Is an index needed for a primary key in SQLite?
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It does it for you.
INTEGER PRIMARY KEY columns aside, both UNIQUE and PRIMARY KEY
constraints are implemented by creating an index in the database (in
the same way as a "CREATE UNIQUE INDEX" statement would). Such an
index is used like any other index in the database to optimize
que...
Python using enumerate inside list comprehension
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Not mandatory to be a tuple. Any expression using i and j that returns a value will do
– Alvaro
Jul 26 '14 at 15:02
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How to exit pdb and allow program to continue?
I'm using the pdb module to debug a program. I'd like to understand how I can exit pdb and allow the program to continue onward to completion. The program is computationally expensive to run, so I don't want to exit without the script attempting to complete. continue doesn't seems to work. How can...
Why does Typescript use the keyword “export” to make classes and interfaces public?
...meClass = SomeClass;.
So conceptually, visibility as controlled by public and private is just for tooling, whereas the export keyword changes the output.
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What is the __DynamicallyInvokable attribute for?
... a type defined in its own assembly.
// So the ctor is always a MethodDef and the type a TypeDef.
// We cache this ctor MethodDef token for faster custom attribute lookup.
// If this attribute type doesn't exist in the assembly, it means the assembly
// doesn't contain any blessed APIs.
Type in...
NuGet for solutions with multiple projects
... > Library Package Manager > Manage NuGet Packages for Solution...
And if you go to the Installed packages area you can 'Manage' a single package across every project in the solution.
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How can I set the Sender's address in Jenkins?
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Using Ubuntu 12.04, local exim4 and Jenkins 1.565.1, installed from the external repo, I had to set this in order to make mail delivery work.
– Max Hohenegger
Aug 21 '14 at 8:39
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How to suppress Pandas Future warning ?
When I run the program, Pandas gives 'Future warning' like below every time.
3 Answers
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