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#!/usr/bin/python3
import json
import urllib.request
import sys
import re
def splitver(x):
v = re.split(r'([^\d]+)', x)
v[0] = int(v[0])
if len(v) > 2:
v[2] = int(v[2])
if len(v) > 4:
v[4] = int(v[4])
# make rc/beta versions sort before normal versions
if len(v) > 3 and v[3] == '.':
v[3] = '~'
elif len(v) == 3:
v.append('~')
return v
ver = sys.argv[1]
d = json.loads(urllib.request.urlopen('https://go.dev/dl/?mode=json&include=all').read())
ds = sorted(d, reverse=True, key=lambda it: splitver(it['version'][2:]))
for x in ds:
if x['version'][:len(ver)] == ver:
print(x['version'])
exit(0)
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