I am trying to get a query set which contains post based on usernames which are stored in model "FollowingProfiles". so models and corresponding views is as follows:-

from django.contrib.auth.models import User



class Profile(models.Model):

    Follwers=models.IntegerField(default='0')

    user=models.OneToOneField(User,on_delete=models.CASCADE,primary_key=True)

    bio=models.TextField(max_length=120,blank=True)

    location=models.CharField(max_length=30,blank=True)

    birth_date=models.DateField(null=True,blank=True)

    verified=models.BooleanField(default=False)

    ProfilePic=models.ImageField(upload_to='UserAvatar',blank=True,null=True)



    def __str__(self):

        return self.user.username



@receiver(post_save,sender=User)

def update_user_profile(sender,instance,created,**kwargs):

    if created:

        Profile.objects.create(user=instance)

    instance.profile.save()



class FollowingProfiles(models.Model):

    Profile=models.ForeignKey(Profile,on_delete=models.CASCADE)

    ProfileName=models.CharField(max_length=120,blank=True,null=True)



    def __str__(self):

        return self.ProfileName



class post(models.Model):

    Profile=models.ForeignKey(Profile,on_delete=models.CASCADE)

    Picture=models.ImageField(upload_to='PostMedia',blank=True,null=True)

    DatePosted=models.DateTimeField(default=timezone.now)

    Content=models.TextField(blank=True,null=True)



    def __str__(self):

        return self.Profile.user.username

views.py

def feed(request):

    if request.user.is_authenticated:

        userprofile=FollowingProfiles.objects.filter(Profile__user=request.user)

        for p in userprofile:

            postuser=post.objects.filter(Profile__user__username=p.ProfileName)

            usrpost+=postuser

        return render(request,'feed/feed.html',{'usrpost':usrpost})

    else:

        return redirect('signup')

It produces following error:-

function' object has no attribute 'objects'

C:UsersG COMTECH SYSTEMdjango-projectssaporaappsaporaviews.py in feed, line 45

line 45 is 

     postuser=post.objects.filter(Profile__user__username=p.ProfileName)

Seems like your post model is conflicting with some post declared as function.
What I suggest is to follow PEP8 in naming your Classes, function, variables and so on in order to avoid such cases.

In your particular case I would rename post model into Post as it's better to name Classes in CamelCase style.
But for fields your are using CamelCase, but it's better to use underscore:
Like that:

class Post(models.Model):

    profile = models.ForeignKey(Profile,on_delete=models.CASCADE)

    picture = models.ImageField(upload_to='PostMedia',blank=True,null=True)

    date_posted = models.DateTimeField(default=timezone.now)

    content = models.TextField(blank=True,null=True)

If you want to make it work fast find where post can be declared as a function in view.py file and rename it. If it's something imported you can change from mymodule import post to be import mymodule and then call function as mymodule.post

Also usrpost is not declared and here is a better solution without for loop:

userprofile_names=FollowingProfiles.objects.filter(Profile__user=request.user).values_list('ProfileName', flat=True)

usrpost=post.objects.filter(Profile__user__username__in=userprofile_names)

return render(request,'feed/feed.html',{'usrpost':usrpost})