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import subprocess
import urllib.request
import urllib.error
from time import sleep
from threading import Lock
import http.client
_print_lock = Lock()
def safe_print(*args, **kwargs):
with _print_lock:
print(*args, **kwargs)
def run(args: list, **kwargs):
p = subprocess.run(args, **kwargs)
if p.returncode != 0:
raise OSError(f'convert returned {p.returncode} ('+' '.join(args)+')')
def download_file(url, output, handle_http_errors=True) -> bool:
tries_left = 3
ok = False
while tries_left > 0:
try:
urllib.request.urlretrieve(url, output)
ok = True
break
except http.client.RemoteDisconnected:
ok = False
print(' caught an exception, sleeping for 2 seconds and retrying...')
sleep(2)
tries_left -= 1
except urllib.error.HTTPError as e:
if not handle_http_errors:
raise e
else:
print(f' failed to download {url}: {str(e)}')
return False
return ok
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