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102 lines
3.7 KiB
102 lines
3.7 KiB
import contextlib
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import glob
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import os
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import urllib
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from datetime import datetime
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from pathlib import Path
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from zipfile import ZipFile
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class WorkingDirectory(contextlib.ContextDecorator):
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# Usage: @WorkingDirectory(dir) decorator or 'with WorkingDirectory(dir):' context manager
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def __init__(self, new_dir):
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self.dir = new_dir # new dir
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self.cwd = Path.cwd().resolve() # current dir
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def __enter__(self):
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os.chdir(self.dir)
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def __exit__(self, exc_type, exc_val, exc_tb):
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os.chdir(self.cwd)
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def increment_path(path, exist_ok=False, sep='', mkdir=False):
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"""
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Increments a file or directory path, i.e. runs/exp --> runs/exp{sep}2, runs/exp{sep}3, ... etc.
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If the path exists and exist_ok is not set to True, the path will be incremented by appending a number and sep to
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the end of the path. If the path is a file, the file extension will be preserved. If the path is a directory, the
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number will be appended directly to the end of the path. If mkdir is set to True, the path will be created as a
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directory if it does not already exist.
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Args:
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path (str or pathlib.Path): Path to increment.
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exist_ok (bool, optional): If True, the path will not be incremented and will be returned as-is. Defaults to False.
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sep (str, optional): Separator to use between the path and the incrementation number. Defaults to an empty string.
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mkdir (bool, optional): If True, the path will be created as a directory if it does not exist. Defaults to False.
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Returns:
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pathlib.Path: Incremented path.
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"""
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path = Path(path) # os-agnostic
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if path.exists() and not exist_ok:
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path, suffix = (path.with_suffix(''), path.suffix) if path.is_file() else (path, '')
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# Method 1
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for n in range(2, 9999):
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p = f'{path}{sep}{n}{suffix}' # increment path
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if not os.path.exists(p): #
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break
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path = Path(p)
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if mkdir:
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path.mkdir(parents=True, exist_ok=True) # make directory
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return path
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def unzip_file(file, path=None, exclude=('.DS_Store', '__MACOSX')):
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# Unzip a *.zip file to path/, excluding files containing strings in exclude list
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if path is None:
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path = Path(file).parent # default path
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with ZipFile(file) as zipObj:
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for f in zipObj.namelist(): # list all archived filenames in the zip
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if all(x not in f for x in exclude):
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zipObj.extract(f, path=path)
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def file_age(path=__file__):
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# Return days since last file update
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dt = (datetime.now() - datetime.fromtimestamp(Path(path).stat().st_mtime)) # delta
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return dt.days # + dt.seconds / 86400 # fractional days
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def file_date(path=__file__):
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# Return human-readable file modification date, i.e. '2021-3-26'
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t = datetime.fromtimestamp(Path(path).stat().st_mtime)
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return f'{t.year}-{t.month}-{t.day}'
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def file_size(path):
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# Return file/dir size (MB)
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mb = 1 << 20 # bytes to MiB (1024 ** 2)
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path = Path(path)
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if path.is_file():
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return path.stat().st_size / mb
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elif path.is_dir():
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return sum(f.stat().st_size for f in path.glob('**/*') if f.is_file()) / mb
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else:
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return 0.0
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def url2file(url):
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# Convert URL to filename, i.e. https://url.com/file.txt?auth -> file.txt
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url = str(Path(url)).replace(':/', '://') # Pathlib turns :// -> :/
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return Path(urllib.parse.unquote(url)).name.split('?')[0] # '%2F' to '/', split https://url.com/file.txt?auth
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def get_latest_run(search_dir='.'):
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# Return path to most recent 'last.pt' in /runs (i.e. to --resume from)
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last_list = glob.glob(f'{search_dir}/**/last*.pt', recursive=True)
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return max(last_list, key=os.path.getctime) if last_list else ''
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