Yet Another Knot Database

Knot	Crossings	Prime?	KnotAtlas	KnotInfo	Mirror?	Colored Jones
0_1	0		Knot[0,1]	0_1	0_1	2 3 4 5 6
-3_1	3	prime		3_1	3_1	2 3 4 5 6
3_1	3	prime	Knot[3,1]		-3_1	2 3 4 5 6
4_1	4	prime	Knot[4,1]	4_1	4_1	2 3 4 5 6
-5_1	5	prime		5_1	5_1	2 3 4 5 6
5_1	5	prime	Knot[5,1]		-5_1	2 3 4 5 6
-5_2	5	prime		5_2	5_2	2 3 4 5 6
5_2	5	prime	Knot[5,2]		-5_2	2 3 4 5 6
-6_1	6	prime		6_1	6_1	2 3 4 5 6
6_1	6	prime	Knot[6,1]		-6_1	2 3 4 5 6
-6_2	6	prime		6_2	6_2	2 3 4 5 6
6_2	6	prime	Knot[6,2]		-6_2	2 3 4 5 6
6_3	6	prime	Knot[6,3]	6_3	6_3	2 3 4 5 6
-3_1 # -3_1	6	composite			3_1 # 3_1	2 3 4 5 6
3_1 # -3_1	6	composite			3_1 # -3_1	2 3 4 5 6
3_1 # 3_1	6	composite			-3_1 # -3_1	2 3 4 5 6
-7_1	7	prime		7_1	7_1	2 3 4 5 6
7_1	7	prime	Knot[7,1]		-7_1	2 3 4 5 6
-7_2	7	prime		7_2	7_2	2 3 4 5 6
7_2	7	prime	Knot[7,2]		-7_2	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