#!/usr/bin/python3
# download protein sequence from UniProt
import requests, time
u1 = "https://www.uniprot.org/uniprot/"
u2 = "P13569"
u3 = ".fasta"
r = requests.get(u1+u2+u3, timeout=1)
time.sleep(1)
sf = r.text
print(r.url)
print(sf)