structured_data._cant_modify.cant_modify() - Code Metrics - mwchase/python-structured-data - Measure and Improve Code Quality continuously with Scrutinizer

structured_data._cant_modify.cant_modify() A
last analyzed 2021-02-23 18:40 UTC

↳ Parent: structured_data._cant_modify

Complexity

Conditions

Size

Total Lines	9
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
eloc	7
dl	0
loc	9
rs	10
c	0
b	0
f	0
cc	2
nop	2

"""Helper funtion for common pseudo-immutable use case."""

import inspect
import typing

MISSING = object()


def cant_modify(self: typing.Any, name: str) -> None:
    """Prevent attempts to modify an attr of the given name."""
    class_repr = repr(self.__class__.__name__)
    name_repr = repr(name)
    if inspect.getattr_static(self, name, MISSING) is MISSING:
        format_msg = "{class_repr} object has no attribute {name_repr}"
    else:
        format_msg = "{class_repr} object attribute {name_repr} is read-only"
    raise AttributeError(format_msg.format(class_repr=class_repr, name_repr=name_repr))


def guard(instance: typing.Any, name: str) -> None:
    """Wrap up the common logic for using cant_modify."""
    if not inspect.isdatadescriptor(inspect.getattr_static(instance, name, MISSING)):
        cant_modify(instance, name)


1			"""Helper funtion for common pseudo-immutable use case."""
2
3			import inspect
4			import typing
5
6			MISSING = object()
7
8
9			def cant_modify(self: typing.Any, name: str) -> None:
10			"""Prevent attempts to modify an attr of the given name."""
11			class_repr = repr(self.__class__.__name__)
12			name_repr = repr(name)
13			if inspect.getattr_static(self, name, MISSING) is MISSING:
14			format_msg = "{class_repr} object has no attribute {name_repr}"
15			else:
16			format_msg = "{class_repr} object attribute {name_repr} is read-only"
17			raise AttributeError(format_msg.format(class_repr=class_repr, name_repr=name_repr))
18
19
20			def guard(instance: typing.Any, name: str) -> None:
21			"""Wrap up the common logic for using cant_modify."""
22			if not inspect.isdatadescriptor(inspect.getattr_static(instance, name, MISSING)):
23			cant_modify(instance, name)
24

mwchase / python-structured-data

structured_data._cant_modify.cant_modify() A last analyzed 2021-02-23 18:40 UTC

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structured_data._cant_modify.cant_modify() A
last analyzed 2021-02-23 18:40 UTC