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77 lines
2.4 KiB
77 lines
2.4 KiB
import contextlib
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import os
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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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import yaml
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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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Increment file or directory path, i.e. runs/exp --> runs/exp{sep}2, runs/exp{sep}3, ... etc.
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# TODO: docs
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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 save_yaml(file='data.yaml', data=None):
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# Single-line safe yaml saving
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with open(file, 'w') as f:
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yaml.safe_dump({k: str(v) if isinstance(v, Path) else v for k, v in data.items()}, f, sort_keys=False)
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def yaml_load(file='data.yaml'):
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# Single-line safe yaml loading
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with open(file, errors='ignore') as f:
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return yaml.safe_load(f)
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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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