vt-commons

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🔥Reusable common utilities, interfaces and implementations for python projects.

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A fully typed library for common methods, utils, interfaces and implementations for python projects.

Install

  pip install vt-commons

Usage examples

• Check for OS

  from vt.utils.commons.commons.os import is_windows
  
  windows = is_windows()

  Check in vt.utils.commons.commons.os and documentation for more functions and utilities related to OS.

• Perform some operation on a root directory

  from vt.utils.commons.commons.op import RootDirOp, CWDRootDirOp, RootDirOps
  from pathlib import Path
  from typing import override
  
  class MyRootDirectoryOperation(RootDirOp):
  ...
  
  @override
  @property
  def root_dir(self)-> Path:
      return Path('path', 'to', 'my', 'root-directory')
  
  certain_root_dir_operation: CWDRootDirOp = RootDirOps.from_path(Path('path', 'to', 'my', 'root-directory'))

  Check in vt.utils.commons.commons.op and documentation for more functions and utilities related to operations.

• Perform state operations

  from vt.utils.commons.commons.state import DoneMarker
  from typing import override
  
  # Track state by marking done
  class MyStateManager(DoneMarker[int]):
  def __init__(self, *args, **kwargs):
      self.id_state = {1: False}
      ...
  
  @override
  def mark_done(self, _id: int)-> bool:
      # mark done for _id
      if self.id_state[_id] is True:
          return False
      self.id_state[_id] = True
      return True

  Check in vt.utils.commons.commons.state and documentation for more functions and utilities related to tracking state.

• Check if a value is MISSING

  from vt.utils.commons.commons.core_py import MISSING, Missing, is_missing
  
  def some_operation(arg: Missing = MISSING):
  """
  ``MISSING`` can be used as a default value sentinel when ``None`` is a valid value for arg.
  """
  arg = 10 if is_missing(arg) else arg
  ...

  Check in vt.utils.commons.commons.core_py and documentation for more functions and utilities related to function management.

• Query and operate on iterables

  >>> from vt.utils.commons.commons.collections import get_first_true, get_first_non_none
  
  >>> assert 3 == get_first_true([1, 3, 5, 7, 2, 1], 8, lambda x: x>2)
  >>> assert 10 == get_first_non_none([None, None, 10, 2, 6], 9)

  Check in vt.utils.commons.commons.collections and documentation for more functions and utilities related to collection management.

• String operations

  >>> from vt.utils.commons.commons.strings import generate_random_string
  
  >>> generate_random_string()  #doctest: +ELLIPSIS
  '...'

  Check in vt.utils.commons.commons.string and documentation for more functions and utilities related to strings

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