Python Flask: returns the same dictionary in every request

Question

I'm trying out Flask, I have this code:

responseDict = {}
responseDict["_hits"] = {}

app = Flask(__name__)

@app.route('/server')
def showMain():
        query = request.args.get('q')
        responseDict["_hits"]["random string here"] = query
       
        return jsonify(responseDict)

Example:

I make a simple GET /server?q=earth
I make another GET /server?q=moon

I get the correct _hits dictionary with the query I provided, but when I make the GET /server?q=moon I also get the previous query, earth How do I delete everything on responseDict when the request is done?

Edit:

responseDict has to be a global variable because it's used for server logging.

Add `responseDict["_hits"] = {}` right before you send the response to reset the dict — Kevin Hernandez, Jan 09 '20 at 16:31

user2874583 · Accepted Answer · 2020-01-09T16:22:18.987

0

responseDict is a global variable. This is why all the request will be added. Try this:

app = Flask(__name__)

@app.route('/server')
def showMain():
        query = request.args.get('q')
        responseDict = {}
        responseDict["_hits"] = {}
        responseDict["_hits"]["random string here"] = query

        return jsonify(responseDict)

Edit: As you wanna keep responseDict as global variable. What about copying this and return it?

responseDict = {}
responseDict["_hits"] = {}

app = Flask(__name__)

@app.route('/server')
def showMain():
        query = request.args.get('q')
        temp_responseDict = responseDict
        temp_responseDict["_hits"]["random string here"] = query

        return jsonify(temp_responseDict)

edited Jan 09 '20 at 16:22

answered Jan 09 '20 at 16:18

user2874583

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thank you very much for the answer buddy, But what if in case, I wanted to keep RD a global variable and destroy when completed (for the next request)? – Dr. Wyoming Jan 09 '20 at 16:20
thank you, keeping a temp dict is actually a good idea (y) – Dr. Wyoming Jan 09 '20 at 16:24

Python Flask: returns the same dictionary in every request

Edit:

1 Answers1