django-ratelimit.py

from ratelimit.decorators import ratelimit

@ratelimit(key='post:username', rate='10/d') # 1
def login(request):
    # ... yout logic here
    pass

@ratelimit(key='ip', rate='1000/h') # 2
def login(request):
    # ... yout logic here
    pass

rate = lambda request: None if request.user.is_authenticated() else '100/h'
key = lambda request: request.POST["search_type"]
@ratelimit(key=key, rate=rate) # 3
def search(request):
    # ... yout logic here
    pass