472 lines
20 KiB
Python
472 lines
20 KiB
Python
|
# Ultralytics YOLO 🚀, AGPL-3.0 license
|
||
|
|
|
||
|
|
import contextlib
|
||
|
|
import re
|
||
|
|
import shutil
|
||
|
|
import subprocess
|
||
|
|
from itertools import repeat
|
||
|
|
from multiprocessing.pool import ThreadPool
|
||
|
|
from pathlib import Path
|
||
|
|
from urllib import parse, request
|
||
|
|
|
||
|
|
import requests
|
||
|
|
import torch
|
||
|
|
|
||
|
|
from ultralytics.utils import LOGGER, TQDM, checks, clean_url, emojis, is_online, url2file
|
||
|
|
|
||
|
|
# Define Ultralytics GitHub assets maintained at https://github.com/ultralytics/assets
|
||
|
|
GITHUB_ASSETS_REPO = 'ultralytics/assets'
|
||
|
|
GITHUB_ASSETS_NAMES = [f'yolov8{k}{suffix}.pt' for k in 'nsmlx' for suffix in ('', '-cls', '-seg', '-pose')] + \
|
||
|
|
[f'yolov5{k}{resolution}u.pt' for k in 'nsmlx' for resolution in ('', '6')] + \
|
||
|
|
[f'yolov3{k}u.pt' for k in ('', '-spp', '-tiny')] + \
|
||
|
|
[f'yolo_nas_{k}.pt' for k in 'sml'] + \
|
||
|
|
[f'sam_{k}.pt' for k in 'bl'] + \
|
||
|
|
[f'FastSAM-{k}.pt' for k in 'sx'] + \
|
||
|
|
[f'rtdetr-{k}.pt' for k in 'lx'] + \
|
||
|
|
['mobile_sam.pt']
|
||
|
|
GITHUB_ASSETS_STEMS = [Path(k).stem for k in GITHUB_ASSETS_NAMES]
|
||
|
|
|
||
|
|
|
||
|
|
def is_url(url, check=True):
|
||
|
|
"""
|
||
|
|
Validates if the given string is a URL and optionally checks if the URL exists online.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
url (str): The string to be validated as a URL.
|
||
|
|
check (bool, optional): If True, performs an additional check to see if the URL exists online.
|
||
|
|
Defaults to True.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
bool: Returns True if the string is a valid URL. If 'check' is True, also returns True if the URL exists online.
|
||
|
|
Returns False otherwise.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
```python
|
||
|
|
valid = is_url("https://www.example.com")
|
||
|
|
```
|
||
|
|
"""
|
||
|
|
with contextlib.suppress(Exception):
|
||
|
|
url = str(url)
|
||
|
|
result = parse.urlparse(url)
|
||
|
|
assert all([result.scheme, result.netloc]) # check if is url
|
||
|
|
if check:
|
||
|
|
with request.urlopen(url) as response:
|
||
|
|
return response.getcode() == 200 # check if exists online
|
||
|
|
return True
|
||
|
|
return False
|
||
|
|
|
||
|
|
|
||
|
|
def delete_dsstore(path, files_to_delete=('.DS_Store', '__MACOSX')):
|
||
|
|
"""
|
||
|
|
Deletes all ".DS_store" files under a specified directory.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
path (str, optional): The directory path where the ".DS_store" files should be deleted.
|
||
|
|
files_to_delete (tuple): The files to be deleted.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
```python
|
||
|
|
from ultralytics.utils.downloads import delete_dsstore
|
||
|
|
|
||
|
|
delete_dsstore('path/to/dir')
|
||
|
|
```
|
||
|
|
|
||
|
|
Note:
|
||
|
|
".DS_store" files are created by the Apple operating system and contain metadata about folders and files. They
|
||
|
|
are hidden system files and can cause issues when transferring files between different operating systems.
|
||
|
|
"""
|
||
|
|
for file in files_to_delete:
|
||
|
|
matches = list(Path(path).rglob(file))
|
||
|
|
LOGGER.info(f'Deleting {file} files: {matches}')
|
||
|
|
for f in matches:
|
||
|
|
f.unlink()
|
||
|
|
|
||
|
|
|
||
|
|
def zip_directory(directory, compress=True, exclude=('.DS_Store', '__MACOSX'), progress=True):
|
||
|
|
"""
|
||
|
|
Zips the contents of a directory, excluding files containing strings in the exclude list. The resulting zip file is
|
||
|
|
named after the directory and placed alongside it.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
directory (str | Path): The path to the directory to be zipped.
|
||
|
|
compress (bool): Whether to compress the files while zipping. Default is True.
|
||
|
|
exclude (tuple, optional): A tuple of filename strings to be excluded. Defaults to ('.DS_Store', '__MACOSX').
|
||
|
|
progress (bool, optional): Whether to display a progress bar. Defaults to True.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
(Path): The path to the resulting zip file.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
```python
|
||
|
|
from ultralytics.utils.downloads import zip_directory
|
||
|
|
|
||
|
|
file = zip_directory('path/to/dir')
|
||
|
|
```
|
||
|
|
"""
|
||
|
|
from zipfile import ZIP_DEFLATED, ZIP_STORED, ZipFile
|
||
|
|
|
||
|
|
delete_dsstore(directory)
|
||
|
|
directory = Path(directory)
|
||
|
|
if not directory.is_dir():
|
||
|
|
raise FileNotFoundError(f"Directory '{directory}' does not exist.")
|
||
|
|
|
||
|
|
# Unzip with progress bar
|
||
|
|
files_to_zip = [f for f in directory.rglob('*') if f.is_file() and all(x not in f.name for x in exclude)]
|
||
|
|
zip_file = directory.with_suffix('.zip')
|
||
|
|
compression = ZIP_DEFLATED if compress else ZIP_STORED
|
||
|
|
with ZipFile(zip_file, 'w', compression) as f:
|
||
|
|
for file in TQDM(files_to_zip, desc=f'Zipping {directory} to {zip_file}...', unit='file', disable=not progress):
|
||
|
|
f.write(file, file.relative_to(directory))
|
||
|
|
|
||
|
|
return zip_file # return path to zip file
|
||
|
|
|
||
|
|
|
||
|
|
def unzip_file(file, path=None, exclude=('.DS_Store', '__MACOSX'), exist_ok=False, progress=True):
|
||
|
|
"""
|
||
|
|
Unzips a *.zip file to the specified path, excluding files containing strings in the exclude list.
|
||
|
|
|
||
|
|
If the zipfile does not contain a single top-level directory, the function will create a new
|
||
|
|
directory with the same name as the zipfile (without the extension) to extract its contents.
|
||
|
|
If a path is not provided, the function will use the parent directory of the zipfile as the default path.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
file (str): The path to the zipfile to be extracted.
|
||
|
|
path (str, optional): The path to extract the zipfile to. Defaults to None.
|
||
|
|
exclude (tuple, optional): A tuple of filename strings to be excluded. Defaults to ('.DS_Store', '__MACOSX').
|
||
|
|
exist_ok (bool, optional): Whether to overwrite existing contents if they exist. Defaults to False.
|
||
|
|
progress (bool, optional): Whether to display a progress bar. Defaults to True.
|
||
|
|
|
||
|
|
Raises:
|
||
|
|
BadZipFile: If the provided file does not exist or is not a valid zipfile.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
(Path): The path to the directory where the zipfile was extracted.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
```python
|
||
|
|
from ultralytics.utils.downloads import unzip_file
|
||
|
|
|
||
|
|
dir = unzip_file('path/to/file.zip')
|
||
|
|
```
|
||
|
|
"""
|
||
|
|
from zipfile import BadZipFile, ZipFile, is_zipfile
|
||
|
|
|
||
|
|
if not (Path(file).exists() and is_zipfile(file)):
|
||
|
|
raise BadZipFile(f"File '{file}' does not exist or is a bad zip file.")
|
||
|
|
if path is None:
|
||
|
|
path = Path(file).parent # default path
|
||
|
|
|
||
|
|
# Unzip the file contents
|
||
|
|
with ZipFile(file) as zipObj:
|
||
|
|
files = [f for f in zipObj.namelist() if all(x not in f for x in exclude)]
|
||
|
|
top_level_dirs = {Path(f).parts[0] for f in files}
|
||
|
|
|
||
|
|
if len(top_level_dirs) > 1 or (len(files) > 1 and not files[0].endswith('/')):
|
||
|
|
# Zip has multiple files at top level
|
||
|
|
path = extract_path = Path(path) / Path(file).stem # i.e. ../datasets/coco8
|
||
|
|
else:
|
||
|
|
# Zip has 1 top-level directory
|
||
|
|
extract_path = path # i.e. ../datasets
|
||
|
|
path = Path(path) / list(top_level_dirs)[0] # i.e. ../datasets/coco8
|
||
|
|
|
||
|
|
# Check if destination directory already exists and contains files
|
||
|
|
if path.exists() and any(path.iterdir()) and not exist_ok:
|
||
|
|
# If it exists and is not empty, return the path without unzipping
|
||
|
|
LOGGER.warning(f'WARNING ⚠️ Skipping {file} unzip as destination directory {path} is not empty.')
|
||
|
|
return path
|
||
|
|
|
||
|
|
for f in TQDM(files, desc=f'Unzipping {file} to {Path(path).resolve()}...', unit='file', disable=not progress):
|
||
|
|
# Ensure the file is within the extract_path to avoid path traversal security vulnerability
|
||
|
|
if '..' in Path(f).parts:
|
||
|
|
LOGGER.warning(f'Potentially insecure file path: {f}, skipping extraction.')
|
||
|
|
continue
|
||
|
|
zipObj.extract(f, extract_path)
|
||
|
|
|
||
|
|
return path # return unzip dir
|
||
|
|
|
||
|
|
|
||
|
|
def check_disk_space(url='https://ultralytics.com/assets/coco128.zip', sf=1.5, hard=True):
|
||
|
|
"""
|
||
|
|
Check if there is sufficient disk space to download and store a file.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
url (str, optional): The URL to the file. Defaults to 'https://ultralytics.com/assets/coco128.zip'.
|
||
|
|
sf (float, optional): Safety factor, the multiplier for the required free space. Defaults to 2.0.
|
||
|
|
hard (bool, optional): Whether to throw an error or not on insufficient disk space. Defaults to True.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
(bool): True if there is sufficient disk space, False otherwise.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
r = requests.head(url) # response
|
||
|
|
assert r.status_code < 400, f'URL error for {url}: {r.status_code} {r.reason}' # check response
|
||
|
|
except Exception:
|
||
|
|
return True # requests issue, default to True
|
||
|
|
|
||
|
|
# Check file size
|
||
|
|
gib = 1 << 30 # bytes per GiB
|
||
|
|
data = int(r.headers.get('Content-Length', 0)) / gib # file size (GB)
|
||
|
|
total, used, free = (x / gib for x in shutil.disk_usage('/')) # bytes
|
||
|
|
if data * sf < free:
|
||
|
|
return True # sufficient space
|
||
|
|
|
||
|
|
# Insufficient space
|
||
|
|
text = (f'WARNING ⚠️ Insufficient free disk space {free:.1f} GB < {data * sf:.3f} GB required, '
|
||
|
|
f'Please free {data * sf - free:.1f} GB additional disk space and try again.')
|
||
|
|
if hard:
|
||
|
|
raise MemoryError(text)
|
||
|
|
LOGGER.warning(text)
|
||
|
|
return False
|
||
|
|
|
||
|
|
|
||
|
|
def get_google_drive_file_info(link):
|
||
|
|
"""
|
||
|
|
Retrieves the direct download link and filename for a shareable Google Drive file link.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
link (str): The shareable link of the Google Drive file.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
(str): Direct download URL for the Google Drive file.
|
||
|
|
(str): Original filename of the Google Drive file. If filename extraction fails, returns None.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
```python
|
||
|
|
from ultralytics.utils.downloads import get_google_drive_file_info
|
||
|
|
|
||
|
|
link = "https://drive.google.com/file/d/1cqT-cJgANNrhIHCrEufUYhQ4RqiWG_lJ/view?usp=drive_link"
|
||
|
|
url, filename = get_google_drive_file_info(link)
|
||
|
|
```
|
||
|
|
"""
|
||
|
|
file_id = link.split('/d/')[1].split('/view')[0]
|
||
|
|
drive_url = f'https://drive.google.com/uc?export=download&id={file_id}'
|
||
|
|
filename = None
|
||
|
|
|
||
|
|
# Start session
|
||
|
|
with requests.Session() as session:
|
||
|
|
response = session.get(drive_url, stream=True)
|
||
|
|
if 'quota exceeded' in str(response.content.lower()):
|
||
|
|
raise ConnectionError(
|
||
|
|
emojis(f'❌ Google Drive file download quota exceeded. '
|
||
|
|
f'Please try again later or download this file manually at {link}.'))
|
||
|
|
for k, v in response.cookies.items():
|
||
|
|
if k.startswith('download_warning'):
|
||
|
|
drive_url += f'&confirm={v}' # v is token
|
||
|
|
cd = response.headers.get('content-disposition')
|
||
|
|
if cd:
|
||
|
|
filename = re.findall('filename="(.+)"', cd)[0]
|
||
|
|
return drive_url, filename
|
||
|
|
|
||
|
|
|
||
|
|
def safe_download(url,
|
||
|
|
file=None,
|
||
|
|
dir=None,
|
||
|
|
unzip=True,
|
||
|
|
delete=False,
|
||
|
|
curl=False,
|
||
|
|
retry=3,
|
||
|
|
min_bytes=1E0,
|
||
|
|
progress=True):
|
||
|
|
"""
|
||
|
|
Downloads files from a URL, with options for retrying, unzipping, and deleting the downloaded file.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
url (str): The URL of the file to be downloaded.
|
||
|
|
file (str, optional): The filename of the downloaded file.
|
||
|
|
If not provided, the file will be saved with the same name as the URL.
|
||
|
|
dir (str, optional): The directory to save the downloaded file.
|
||
|
|
If not provided, the file will be saved in the current working directory.
|
||
|
|
unzip (bool, optional): Whether to unzip the downloaded file. Default: True.
|
||
|
|
delete (bool, optional): Whether to delete the downloaded file after unzipping. Default: False.
|
||
|
|
curl (bool, optional): Whether to use curl command line tool for downloading. Default: False.
|
||
|
|
retry (int, optional): The number of times to retry the download in case of failure. Default: 3.
|
||
|
|
min_bytes (float, optional): The minimum number of bytes that the downloaded file should have, to be considered
|
||
|
|
a successful download. Default: 1E0.
|
||
|
|
progress (bool, optional): Whether to display a progress bar during the download. Default: True.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
```python
|
||
|
|
from ultralytics.utils.downloads import safe_download
|
||
|
|
|
||
|
|
link = "https://ultralytics.com/assets/bus.jpg"
|
||
|
|
path = safe_download(link)
|
||
|
|
```
|
||
|
|
"""
|
||
|
|
gdrive = url.startswith('https://drive.google.com/') # check if the URL is a Google Drive link
|
||
|
|
if gdrive:
|
||
|
|
url, file = get_google_drive_file_info(url)
|
||
|
|
|
||
|
|
f = Path(dir or '.') / (file or url2file(url)) # URL converted to filename
|
||
|
|
if '://' not in str(url) and Path(url).is_file(): # URL exists ('://' check required in Windows Python<3.10)
|
||
|
|
f = Path(url) # filename
|
||
|
|
elif not f.is_file(): # URL and file do not exist
|
||
|
|
desc = f"Downloading {url if gdrive else clean_url(url)} to '{f}'"
|
||
|
|
LOGGER.info(f'{desc}...')
|
||
|
|
f.parent.mkdir(parents=True, exist_ok=True) # make directory if missing
|
||
|
|
check_disk_space(url)
|
||
|
|
for i in range(retry + 1):
|
||
|
|
try:
|
||
|
|
if curl or i > 0: # curl download with retry, continue
|
||
|
|
s = 'sS' * (not progress) # silent
|
||
|
|
r = subprocess.run(['curl', '-#', f'-{s}L', url, '-o', f, '--retry', '3', '-C', '-']).returncode
|
||
|
|
assert r == 0, f'Curl return value {r}'
|
||
|
|
else: # urllib download
|
||
|
|
method = 'torch'
|
||
|
|
if method == 'torch':
|
||
|
|
torch.hub.download_url_to_file(url, f, progress=progress)
|
||
|
|
else:
|
||
|
|
with request.urlopen(url) as response, TQDM(total=int(response.getheader('Content-Length', 0)),
|
||
|
|
desc=desc,
|
||
|
|
disable=not progress,
|
||
|
|
unit='B',
|
||
|
|
unit_scale=True,
|
||
|
|
unit_divisor=1024) as pbar:
|
||
|
|
with open(f, 'wb') as f_opened:
|
||
|
|
for data in response:
|
||
|
|
f_opened.write(data)
|
||
|
|
pbar.update(len(data))
|
||
|
|
|
||
|
|
if f.exists():
|
||
|
|
if f.stat().st_size > min_bytes:
|
||
|
|
break # success
|
||
|
|
f.unlink() # remove partial downloads
|
||
|
|
except Exception as e:
|
||
|
|
if i == 0 and not is_online():
|
||
|
|
raise ConnectionError(emojis(f'❌ Download failure for {url}. Environment is not online.')) from e
|
||
|
|
elif i >= retry:
|
||
|
|
raise ConnectionError(emojis(f'❌ Download failure for {url}. Retry limit reached.')) from e
|
||
|
|
LOGGER.warning(f'⚠️ Download failure, retrying {i + 1}/{retry} {url}...')
|
||
|
|
|
||
|
|
if unzip and f.exists() and f.suffix in ('', '.zip', '.tar', '.gz'):
|
||
|
|
from zipfile import is_zipfile
|
||
|
|
|
||
|
|
unzip_dir = (dir or f.parent).resolve() # unzip to dir if provided else unzip in place
|
||
|
|
if is_zipfile(f):
|
||
|
|
unzip_dir = unzip_file(file=f, path=unzip_dir, progress=progress) # unzip
|
||
|
|
elif f.suffix in ('.tar', '.gz'):
|
||
|
|
LOGGER.info(f'Unzipping {f} to {unzip_dir}...')
|
||
|
|
subprocess.run(['tar', 'xf' if f.suffix == '.tar' else 'xfz', f, '--directory', unzip_dir], check=True)
|
||
|
|
if delete:
|
||
|
|
f.unlink() # remove zip
|
||
|
|
return unzip_dir
|
||
|
|
|
||
|
|
|
||
|
|
def get_github_assets(repo='ultralytics/assets', version='latest', retry=False):
|
||
|
|
"""
|
||
|
|
Retrieve the specified version's tag and assets from a GitHub repository. If the version is not specified, the
|
||
|
|
function fetches the latest release assets.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
repo (str, optional): The GitHub repository in the format 'owner/repo'. Defaults to 'ultralytics/assets'.
|
||
|
|
version (str, optional): The release version to fetch assets from. Defaults to 'latest'.
|
||
|
|
retry (bool, optional): Flag to retry the request in case of a failure. Defaults to False.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
tuple: A tuple containing the release tag and a list of asset names.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
```python
|
||
|
|
tag, assets = get_github_assets(repo='ultralytics/assets', version='latest')
|
||
|
|
```
|
||
|
|
"""
|
||
|
|
|
||
|
|
if version != 'latest':
|
||
|
|
version = f'tags/{version}' # i.e. tags/v6.2
|
||
|
|
url = f'https://api.github.com/repos/{repo}/releases/{version}'
|
||
|
|
r = requests.get(url) # github api
|
||
|
|
if r.status_code != 200 and r.reason != 'rate limit exceeded' and retry: # failed and not 403 rate limit exceeded
|
||
|
|
r = requests.get(url) # try again
|
||
|
|
if r.status_code != 200:
|
||
|
|
LOGGER.warning(f'⚠️ GitHub assets check failure for {url}: {r.status_code} {r.reason}')
|
||
|
|
return '', []
|
||
|
|
data = r.json()
|
||
|
|
return data['tag_name'], [x['name'] for x in data['assets']] # tag, assets i.e. ['yolov8n.pt', 'yolov8s.pt', ...]
|
||
|
|
|
||
|
|
|
||
|
|
def attempt_download_asset(file, repo='ultralytics/assets', release='v0.0.0', **kwargs):
|
||
|
|
"""
|
||
|
|
Attempt to download a file from GitHub release assets if it is not found locally. The function checks for the file
|
||
|
|
locally first, then tries to download it from the specified GitHub repository release.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
file (str | Path): The filename or file path to be downloaded.
|
||
|
|
repo (str, optional): The GitHub repository in the format 'owner/repo'. Defaults to 'ultralytics/assets'.
|
||
|
|
release (str, optional): The specific release version to be downloaded. Defaults to 'v0.0.0'.
|
||
|
|
**kwargs: Additional keyword arguments for the download process.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
str: The path to the downloaded file.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
```python
|
||
|
|
file_path = attempt_download_asset('yolov5s.pt', repo='ultralytics/assets', release='latest')
|
||
|
|
```
|
||
|
|
"""
|
||
|
|
from ultralytics.utils import SETTINGS # scoped for circular import
|
||
|
|
|
||
|
|
# YOLOv3/5u updates
|
||
|
|
file = str(file)
|
||
|
|
file = checks.check_yolov5u_filename(file)
|
||
|
|
file = Path(file.strip().replace("'", ''))
|
||
|
|
if file.exists():
|
||
|
|
return str(file)
|
||
|
|
elif (SETTINGS['weights_dir'] / file).exists():
|
||
|
|
return str(SETTINGS['weights_dir'] / file)
|
||
|
|
else:
|
||
|
|
# URL specified
|
||
|
|
name = Path(parse.unquote(str(file))).name # decode '%2F' to '/' etc.
|
||
|
|
download_url = f'https://github.com/{repo}/releases/download'
|
||
|
|
if str(file).startswith(('http:/', 'https:/')): # download
|
||
|
|
url = str(file).replace(':/', '://') # Pathlib turns :// -> :/
|
||
|
|
file = url2file(name) # parse authentication https://url.com/file.txt?auth...
|
||
|
|
if Path(file).is_file():
|
||
|
|
LOGGER.info(f'Found {clean_url(url)} locally at {file}') # file already exists
|
||
|
|
else:
|
||
|
|
safe_download(url=url, file=file, min_bytes=1E5, **kwargs)
|
||
|
|
|
||
|
|
elif repo == GITHUB_ASSETS_REPO and name in GITHUB_ASSETS_NAMES:
|
||
|
|
safe_download(url=f'{download_url}/{release}/{name}', file=file, min_bytes=1E5, **kwargs)
|
||
|
|
|
||
|
|
else:
|
||
|
|
tag, assets = get_github_assets(repo, release)
|
||
|
|
if not assets:
|
||
|
|
tag, assets = get_github_assets(repo) # latest release
|
||
|
|
if name in assets:
|
||
|
|
safe_download(url=f'{download_url}/{tag}/{name}', file=file, min_bytes=1E5, **kwargs)
|
||
|
|
|
||
|
|
return str(file)
|
||
|
|
|
||
|
|
|
||
|
|
def download(url, dir=Path.cwd(), unzip=True, delete=False, curl=False, threads=1, retry=3):
|
||
|
|
"""
|
||
|
|
Downloads files from specified URLs to a given directory. Supports concurrent downloads if multiple threads are
|
||
|
|
specified.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
url (str | list): The URL or list of URLs of the files to be downloaded.
|
||
|
|
dir (Path, optional): The directory where the files will be saved. Defaults to the current working directory.
|
||
|
|
unzip (bool, optional): Flag to unzip the files after downloading. Defaults to True.
|
||
|
|
delete (bool, optional): Flag to delete the zip files after extraction. Defaults to False.
|
||
|
|
curl (bool, optional): Flag to use curl for downloading. Defaults to False.
|
||
|
|
threads (int, optional): Number of threads to use for concurrent downloads. Defaults to 1.
|
||
|
|
retry (int, optional): Number of retries in case of download failure. Defaults to 3.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
```python
|
||
|
|
download('https://ultralytics.com/assets/example.zip', dir='path/to/dir', unzip=True)
|
||
|
|
```
|
||
|
|
"""
|
||
|
|
dir = Path(dir)
|
||
|
|
dir.mkdir(parents=True, exist_ok=True) # make directory
|
||
|
|
if threads > 1:
|
||
|
|
with ThreadPool(threads) as pool:
|
||
|
|
pool.map(
|
||
|
|
lambda x: safe_download(
|
||
|
|
url=x[0], dir=x[1], unzip=unzip, delete=delete, curl=curl, retry=retry, progress=threads <= 1),
|
||
|
|
zip(url, repeat(dir)))
|
||
|
|
pool.close()
|
||
|
|
pool.join()
|
||
|
|
else:
|
||
|
|
for u in [url] if isinstance(url, (str, Path)) else url:
|
||
|
|
safe_download(url=u, dir=dir, unzip=unzip, delete=delete, curl=curl, retry=retry)
|