Find the group using Group model with the name of the group, then add the user to the user_set

    from django.contrib.auth.models import Group
    my_group = Group.objects.get(name=&#39;my_group_name&#39;) 
    my_group.user_set.add(your_user)

Here&#39;s how to do this in modern versions of Django (tested in Django 1.7):

    from django.contrib.auth.models import Group
    group = Group.objects.get(name=&#39;groupname&#39;)
    user.groups.add(group)

coredumperror is right but I have found one thing I need to share that one

  

    from django.contrib.auth.models import Group
    
    # get_or_create return error due to 
    new_group = Group.objects.get_or_create(name = &#39;groupName&#39;)
    print(type(new_group))       # return tuple

    new_group = Group.objects.get_or_create(name = &#39;groupName&#39;)
    user.groups.add(new_group)   # new_group as tuple and it return error
    
    # get() didn&#39;t return error due to 
    new_group = Group.objects.get(name = &#39;groupName&#39;)
    print(type(new_group))       # return &lt;class &#39;django.contrib.auth.models.Group&#39;&gt;

    user = User.objects.get(username = &#39;username&#39;)
    user.groups.add(new_group)   # new_group as object and user is added

    

I want to create a map object in javascript. I came to the following idea:

     var a = new Array();
     a[&quot;key1&quot;] = &quot;value1&quot;;
     a[&quot;key2&quot;] = &quot;value2&quot;;

but then how I can find if a particular key exists or not?


How to create a hash or dictionary object in JavaScript

Is there some global constructs that I can use whenever I need to access whether the Control, Shift, Alt buttons are down? For instance inside `MouseDown` event of a `TreeView`.

If so how?

How to detect modifier key states in WPF?

How would I add a user to a group in django by the group&#39;s name?

I can do this:

    user.groups.add(1) # add by id

How would I do something like this:

    user.groups.add(name=&#39;groupname&#39;) # add by name

Adding a user to a group in django

How would I add a user to a group in django by the group's name?
I can do this:
<pre><code class="hljs language-csharp">user.groups.add(1) # add by id
</code></pre>
How would I do something like this:
<pre><code class="hljs language-ini">user.groups.add(name='groupname') # add by name
</code></pre>

Consider:

    $ cat bla.py 
    u = unicode(&#39;d…&#39;)
    s = u.encode(&#39;utf-8&#39;)
    print s
    $ python bla.py 
      File &quot;bla.py&quot;, line 1
    SyntaxError: Non-ASCII character &#39;\xe2&#39; in file bla.py on line 1, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details

How can I declare UTF-8 strings in source code?


Working with UTF-8 encoding in Python source

Can a Python function be an argument of another function?

Say:

    def myfunc(anotherfunc, extraArgs):
        # run anotherfunc and also pass the values from extraArgs to it
        pass

So this is basically two questions:

1. Is it allowed at all?
2. And if it is, how do I use the function inside the other function? Would I need to use exec(), eval() or something like that? Never needed to mess with them.

BTW, extraArgs is a list/tuple of anotherfunc&#39;s arguments.


Python function as a function argument?

By default `logging.Formatter(&#39;%(asctime)s&#39;)` prints with the following format:

    2011-06-09 10:54:40,638

where 638 is the millisecond. I need to change the comma to a dot:

    2011-06-09 10:54:40.638

To format the time I can use:

    logging.Formatter(fmt=&#39;%(asctime)s&#39;,datestr=date_format_str)

however the [documentation][1] doesn&#39;t specify how to format milliseconds. I&#39;ve found [this SO question][2] which talks about microseconds, but a) I would prefer milliseconds and b) the following doesn&#39;t work on Python 2.6 (which I&#39;m working on) due to the `%f`:

    logging.Formatter(fmt=&#39;%(asctime)s&#39;,datefmt=&#39;%Y-%m-%d,%H:%M:%S.%f&#39;)

  [1]: http://docs.python.org/library/time.html#time.strftime
  [2]: https://stackoverflow.com/questions/698223/how-can-i-parse-a-time-string-containing-milliseconds-in-it-with-python

Python logging: use milliseconds in time format

I am a bit confused. There seem to be two different kind of Python packages, source distributions (setup.py sdist) and egg distributions (setup.py bdist_egg).

Both seem to be just archives with the same data, the python source files. One difference is that `pip`, the most recommended package manager, is not able to install eggs.

What is the difference between the two and what is &#39;the&#39; way to do distribute my packages?


(Note, I am not wanting to distribute my packages through PyPI, but I want to use a package manager that fetches my dependencies from PyPI)

What is the difference between an &#39;sdist&#39; .tar.gz distribution and an python egg?

[`index()`][1] will give the first occurrence of an item in a list. Is there a neat trick which returns all indices in a list for an element?

 


  [1]: https://docs.python.org/3/tutorial/datastructures.html

How to find all occurrences of an element in a list

I&#39;m starting to organize a new project and let&#39;s say i&#39;ll have a few models like **products** and **catalogs**.

I will allow my clients (not visitors, only specific clients) to login on Django Admin site to create, edit and delete their own catalogs.

Lets say I create a model called **&quot;Shop&quot;**, create every shop (name, address, logo, contact info and etc.) and create an admin user binded to that shop.

Now I want this new admin (who&#39;s not a site admin, but a shop admin -- probably an **user group**) to see and edit **only the catalogs linked with his shop**.

Is that possible?

Should I do this inside the Django Admin or should I create a new &quot;shop admin&quot; app?

Django Admin - Specific user (admin) content

Django

I have next models:

    class Group(models.Model):
        name = models.CharField(max_length=100)
        parent_group = models.ManyToManyField(&quot;self&quot;, blank=True)
        
        def __unicode__(self):
            return self.name
    
    
    class Block(models.Model):
        
        name = models.CharField(max_length=100)
        app = models.CharField(max_length=100)
        group = models.ForeignKey(Group)
    
        def __unicode__(self):
            return self.name


say, block **b1** has **g1** group. By it&#39;s name I want to get **all blocks** from group **g1**. I wrote next recursive function:


    def get_blocks(group):
        
        def get_needed_blocks(group):
            for block in group.block_set:
                blocks.append(block)
    
            if group.parent_group is not None:
                get_needed_blocks(group.parent_group)
    
        blocks = []
        get_needed_blocks(group)
        return blocks
        
but **b1.group.block_set** returns me **RelatedManager** object, which is not iterable.

What to do? What&#39;s wrong?

TypeError: &#39;RelatedManager&#39; object is not iterable

How would I delete an object from a Many-to-Many relationship without removing the actual object?

**Example:**

I have the models `Moods` and `Interest`.

`Mood` has a many-to-many field `interests` (which is a `models.ManyToManyField(Interest)`). 

I create an instance of `Moods` called `my_mood`. In `my_moods`&#39;s interests field I have `my_interest`, meaning 

    &gt;&gt;&gt; my_mood.interests.all()
    [my_interest, ...]

How do I remove `my_interest` from `my_mood` without deleting either model instance? In other words, how do I remove the relationship without affecting the related models?

Django removing object from ManyToMany relationship

I have this model I&#39;m showing in the admin page:

    class Dog(models.Model):
        bark_volume = models.DecimalField(...
        unladen_speed = models.DecimalField(...
    
        def clean(self):
            if self.bark_volume &lt; 5:
                raise ValidationError(&quot;must be louder!&quot;)

As you can see I put a validation on the model.  But what I want to happen is for the admin page to show the error next to the bark_volume field instead of a general error like it is now.  Is there a way to specify which field the validation is failing on?

Much thanks in advance.


Django - How to specify which field a validation fails on?

Is there a way of telling django that a model having a contenttypes GenericForeignKey can only point to models from a predefined list? For example, I have 4 models: A, B, C, D and a model X that holds a GenericForeignKey. Can I tell X that only A &amp; B are allowed for the GenericForeignKey?

Content Type	Original Author	Original Content on Stackoverflow
Question	David542	View Question on Stackoverflow
Solution 1 - Python	juankysmith	View Answer on Stackoverflow
Solution 2 - Python	coredumperror	View Answer on Stackoverflow
Solution 3 - Python	VigneshKarthik Kasiviswanathan	View Answer on Stackoverflow

Adding a user to a group in django

Python Problem Overview

Python Solutions

Solution 1 - Python

Solution 2 - Python

Solution 3 - Python

How to detect modifier key states in WPF?

How to create a hash or dictionary object in JavaScript

Attributions