I'm trying to make an api call using Postman, from a simple app written in Python shown here:

from flask import Flask
from flask_restful import Resource, Api
app = Flask(__name__)
api = Api(app)

if __name__ == '__main__':
    app.run()  
    
class Users(Resource):
    pass

api.add_resource(Users, '/users')

When running the code, I get the response:

• Serving Flask app 'main' (lazy loading) * Environment: production
• WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
• Debug mode: off
• Running on http://127.0.0.1:5000/ (Press CTRL C to quit)

When I make a get request to the address below, i receive a 404 error:

http://127.0.0.1:5000/users

I tried rebooting my pc (saw someone fixed it that way), and using Insomnia instead of Postman. I tried adding changing the users class section, that did not fix it either:

from flask import Flask
from flask_restful import Resource, Api
import pandas as pd
app = Flask(__name__)
api = Api(app)

if __name__ == '__main__':
    app.run()
    
class Users(Resource):
   def get(self):
       data = pd.read_csv('users.csv')  
       data = data.to_dict()  
       return {'data': data}, 200 

api.add_resource(Users, '/users')  

CodePudding user response：

Found it, this works:

from flask import Flask
from flask_restful import Resource, Api
import pandas as pd
app = Flask(__name__)
api = Api(app)

class Users(Resource):
   def get(self):
       data = pd.read_csv('users.csv')  # read CSV
       data = data.to_dict()  # convert dataframe to dictionary
       return {'data': data}, 200  # return data and 200 OK code

api.add_resource(Users, '/users')  # '/users' is our entry point for Users

if __name__ == '__main__':
    app.run()  # run our Flask app

CodePudding user response：

You are missing the route prefix for your view. Try this:

@app.route('/')
class Users(Resource):
   def get(self):
   data = pd.read_csv('users.csv')  
   data = data.to_dict()  
   return {'data': data}, 200 

See Flask documentation