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An enumeration-style class that defines constants for file move operation behaviors, specifically whether to overwrite existing files or perform no operation.

Purpose

This class serves as a simple enumeration to specify criteria for file move operations. It provides named constants that can be used to control the behavior when moving files, particularly whether existing files should be overwritten. This is a lightweight alternative to using Python's enum.Enum, providing integer constants that can be used as flags or options in file operation functions.

Source Code

class MoveOperations:
    """Specifies criteria for how to move files."""

    none = 0
    """Specifies no move operation is specified."""

    overwrite = 1
    """Specifies a file with the same name is to be overwritten if it exists."""

Parameters

Parameter Details

bases: This refers to the base classes from which MoveOperations inherits. In this case, it implicitly inherits from 'object' (the default base class in Python). No explicit base classes are defined.

Return Value

Instantiating this class returns a MoveOperations object, though the class is designed to be used via its class-level constants (none=0, overwrite=1) rather than through instantiation. The class attributes 'none' and 'overwrite' return integer values (0 and 1 respectively) that represent different move operation modes.

Class Interface

Attributes

Usage Example

# Using MoveOperations as an enumeration
from move_operations import MoveOperations

# Access the constants directly from the class
operation_mode = MoveOperations.overwrite
print(operation_mode)  # Output: 1

# Use in conditional logic
if operation_mode == MoveOperations.overwrite:
    print("Will overwrite existing files")
elif operation_mode == MoveOperations.none:
    print("No move operation specified")

# Example usage in a hypothetical file move function
def move_file(source, destination, operation=MoveOperations.none):
    if operation == MoveOperations.overwrite:
        # Overwrite logic here
        pass
    elif operation == MoveOperations.none:
        # Skip or raise error if file exists
        pass

move_file('source.txt', 'dest.txt', MoveOperations.overwrite)

Best Practices

• This class is designed to be used without instantiation - access the constants directly via the class name (e.g., MoveOperations.overwrite)
• The class serves as a namespace for related constants rather than a traditional class with methods and state
• Consider using Python's enum.IntEnum for more robust enumeration behavior in production code, as it provides better type safety and IDE support
• Do not modify the class attributes at runtime as they are intended to be immutable constants
• When extending this pattern, consider adding more operation types as additional class attributes with unique integer values
• This pattern is useful for maintaining backward compatibility with systems that expect integer flags rather than enum objects

Tags

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