Yet Another Knot Database

Knot	Crossings	Prime?	KnotAtlas	KnotInfo	Mirror?	Colored Jones
-9_2	9	prime		9_2	9_2	2 3 4 5 6
9_2	9	prime	Knot[9,2]		-9_2	2 3 4 5 6
-9_20	9	prime		9_20	9_20	2 3 4 5 6
9_20	9	prime	Knot[9,20]		-9_20	2 3 4 5 6
-9_21	9	prime		9_21	9_21	2 3 4 5 6
9_21	9	prime	Knot[9,21]		-9_21	2 3 4 5 6
-9_22	9	prime			9_22	2 3 4 5 6
9_22	9	prime	Knot[9,22]	9_22	-9_22	2 3 4 5 6
-9_23	9	prime		9_23	9_23	2 3 4 5 6
9_23	9	prime	Knot[9,23]		-9_23	2 3 4 5 6
-9_24	9	prime		9_24	9_24	2 3 4 5 6
9_24	9	prime	Knot[9,24]		-9_24	2 3 4 5 6
-9_25	9	prime		9_25	9_25	2 3 4 5 6
9_25	9	prime	Knot[9,25]		-9_25	2 3 4 5 6
-9_26	9	prime		9_26	9_26	2 3 4 5 6
9_26	9	prime	Knot[9,26]		-9_26	2 3 4 5 6
-9_27	9	prime		9_27	9_27	2 3 4 5 6
9_27	9	prime	Knot[9,27]		-9_27	2 3 4 5 6
-9_28	9	prime		9_28	9_28	2 3 4 5 6
9_28	9	prime	Knot[9,28]		-9_28	2 3 4 5 6

Python

Make sure to pip install requests, then use the following sample code to load the surgeries into Python.

import requests

url = "http://yakdb.org/api/knots"

headers = {
    "Accept": "application/json"
}

response = requests.get(url, headers=headers)
data = response.json()
print(len(data)) # print number of records returned

Mathematica

(Wolfram language)

(* 1. Specify the URL *)
url = "http://yakdb.org/api/knots";

(* 2. Directly import and parse as JSON *)
data = Import[url, "RawJSON"];

(* 3. Inspect the result, which should be an Association or list of Associations *)
data