Flask: get current route

Simply use request.path.

from flask import request

...

@app.route("/antitop/")
@app.route("/top/")
@requires_auth
def show_top():
    ... request.path ...

the most 'flasky' way to check which route triggered your view is, by request.url_rule.

from flask import request

rule = request.url_rule

if 'antitop' in rule.rule:
    # request by '/antitop'

elif 'top' in rule.rule:
    # request by '/top'

Another option is to use endpoint variable:

@app.route("/api/v1/generate_data", methods=['POST'], endpoint='v1')
@app.route("/api/v2/generate_data", methods=['POST'], endpoint='v2')
def generate_data():
    version = request.endpoint
    return version