Testing Flasks Jsonify method's behavior with lists and arrays

resulting_error.txt

Traceback (most recent call last):
  File "/home/douglas/devel/envs/forkchess/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "/home/douglas/devel/envs/forkchess/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/home/douglas/devel/envs/forkchess/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/home/douglas/devel/envs/forkchess/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/douglas/devel/envs/forkchess/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/douglas/devel/envs/forkchess/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/douglas/devel/envs/forkchess/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/douglas/devel/envs/forkchess/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/douglas/devel/random/jsonify_test/server.py", line 16, in array
    return jsonify(a_array)
  File "/home/douglas/devel/envs/forkchess/lib/python2.7/site-packages/flask/json.py", line 237, in jsonify
    return current_app.response_class(dumps(dict(*args, **kwargs),
TypeError: cannot convert dictionary update sequence element #0 to a sequence

server.py

#!/usr/bin/env python

from flask import Flask
from flask import jsonify

app = Flask(__name__)
#app.secret_key="This is the super secret key... SHHHH"
app.debug = True

a_array = [1,2,3,4,5]
a_list = a_array
a_dict = {"array": a_array}

@app.route("/array")
def array():
    return jsonify(a_array)

@app.route("/list")
def list():
    return jsonify(a_list)

@app.route("/dict")
def dict():
    return jsonify(a_dict)

if __name__ == "__main__":
    app.run()