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....

Answer 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.

Answer 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()