requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=8000): Max retries exceeded with url: /api/1/

Question

I am trying to communicate between Django and Python file but I am getting below error :

requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=8000): Max retries exceeded with url: /api/1/ (Caused by NewConnectionError(': Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it'))

I have created a Python file named test.py In a Django app and trying to communicate between them. My Python file contains below code :

import requests
BASE_URL='http://127.0.0.1:8000/'
ENDPOINT='api/'
def get_resource(id):
    resp=requests.get(BASE_URL+ENDPOINT+id+'/')
    print(resp.status_code)
    print(resp.json()) 
id=input("Enter some ID: ")
get_resource(id)

Models.py contains:-

from django.db import models

# Create your models here.
class Employee(models.Model):
    eno=models.IntegerField()
    ename=models.CharField(max_length=70)
    esal=models.FloatField()
    eaddr=models.CharField(max_length=100)

Admin.py contains:-

from django.contrib import admin
from testapp.models import Employee
# Register your models here.
class EmployeeAdmin(admin.ModelAdmin):
    list_display=  ['id','eno','ename','esal','eaddr']

admin.site.register(Employee,EmployeeAdmin)

My Views.py contains:-

from django.shortcuts import render
from django.views.generic import View
from testapp.models import Employee
import json
from django.http import HttpResponse


class EmployeeDetailCBV(View):
def get(self,request,id,*args,**kwargs):
    emp = Employee.objects.get(id=id)  
    emp_data = {'eno':emp.eno , 'ename':emp.ename , 'esal':emp.esal , 'eaddr':emp.eaddr} 
    json_data=json.dumps(emp_data)
    return HttpResponse(json_data , content_type='application/json')

urls.py file contains:-

from django.contrib import admin
from django.urls import path
from testapp import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('api/(?P<id>\d+)/$', views.EmployeeDetailCBV.as_view()),
]

Getting error like :

requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=8000): Max retries exceeded with url: /api/1/ (Caused by NewConnectionError(': Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it'))

Please help me. Thank you techies....

Solution 1

I got the real reason behind the failure. I had run only py test.py from only 1 terminal to access the python file. At that time the server was not running so commmunication couldn't happen. I then opened a separate terminal and ran the Dev server and now my Python file is able to communicate with Django file. Now its running fine.

Solution 2

Try this :

import requests

# BASE_URL='http://127.0.0.8000' <<< Url with port malformed
BASE_URL='http://127.0.0.1:8000'
ENDPOINT='api/'
def get_resource():
    # resp=requests.get(BASE_URL+ENDPOINT)  <<< Request url malformed
    resp=requests.get(BASE_URL+"/"+ENDPOINT)
    print(resp.status_code)
    print(resp.json())
get_resource()

Solution 3

You just need to open separate terminal and run your python code and

make sure your server is running at that time

Comments

[Learner]

Yea I forgot to put / after 8000. Now I've corrected it but again showing the same error

[Learner]

Thanks for identifying that. My bad. Changed it but again getting same error

[Ugo T.]

Oh right, the last thing : http://127.0.0:8000 -> http://127.0.0.1:8000. So obvious, that I couldn't see it !

[Learner]

It seems I'm drunk and trying to code. Sorry for missing that. Changed it but I don't know why it's throwing same error again and again

[Ugo T.]

What happens when you go to http://127.0.0.1:8000/api from your browser ?

[Learner]

Yea now I'm able to get the data I had created in admin page. But when I'm trying to retrieve same information through Python file i.e, test.py I'm still getting requests.exceptions.ConnectionError: HTTPConnectionPool(host='127.0.0.1', port=8000): Max retries exceeded with url: /api/1/ (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x04219250>: Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it'))

[MwamiTovi]

Oops!! Had forgotten to start the dev-server first, too. Thanks @Chandan

[RicarHincapie]

If you are not planning to give an answer, just go to "add a comment"

[Admin]

Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center.