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Update check_file() avoid repeat URL downloads #5526

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Nov 5, 2021
Merged

Update check_file() avoid repeat URL downloads #5526

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9 changes: 6 additions & 3 deletions utils/general.py
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Original file line number Diff line number Diff line change
Expand Up @@ -338,9 +338,12 @@ def check_file(file, suffix=''):
elif file.startswith(('http:/', 'https:/')): # download
url = str(Path(file)).replace(':/', '://') # Pathlib turns :// -> :/
file = Path(urllib.parse.unquote(file).split('?')[0]).name # '%2F' to '/', split https://url.com/file.txt?auth
print(f'Downloading {url} to {file}...')
torch.hub.download_url_to_file(url, file)
assert Path(file).exists() and Path(file).stat().st_size > 0, f'File download failed: {url}' # check
if Path(file).is_file():
print(f'Found {url} locally at {file}') # file already exists
else:
print(f'Downloading {url} to {file}...')
torch.hub.download_url_to_file(url, file)
assert Path(file).exists() and Path(file).stat().st_size > 0, f'File download failed: {url}' # check
return file
else: # search
files = []
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