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✏️ /opt/alt/python37/lib64/python3.7/site-packages/pyrsistent/_immutable.py

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import sys

import six

def immutable(members='', name='Immutable', verbose=False):
    """
    Produces a class that either can be used standalone or as a base class for persistent classes.

This is a thin wrapper around a named tuple.

Constructing a type and using it to instantiate objects:

>>> Point = immutable('x, y', name='Point')
    >>> p = Point(1, 2)
    >>> p2 = p.set(x=3)
    >>> p
    Point(x=1, y=2)
    >>> p2
    Point(x=3, y=2)

Inheriting from a constructed type. In this case no type name needs to be supplied:

>>> class PositivePoint(immutable('x, y')):
    ...     __slots__ = tuple()
    ...     def __new__(cls, x, y):
    ...         if x > 0 and y > 0:
    ...             return super(PositivePoint, cls).__new__(cls, x, y)
    ...         raise Exception('Coordinates must be positive!')
    ...
    >>> p = PositivePoint(1, 2)
    >>> p.set(x=3)
    PositivePoint(x=3, y=2)
    >>> p.set(y=-3)
    Traceback (most recent call last):
    Exception: Coordinates must be positive!

The persistent class also supports the notion of frozen members. The value of a frozen member
    cannot be updated. For example it could be used to implement an ID that should remain the same
    over time. A frozen member is denoted by a trailing underscore.

>>> Point = immutable('x, y, id_', name='Point')
    >>> p = Point(1, 2, id_=17)
    >>> p.set(x=3)
    Point(x=3, y=2, id_=17)
    >>> p.set(id_=18)
    Traceback (most recent call last):
    AttributeError: Cannot set frozen members id_
    """

if isinstance(members, six.string_types):
        members = members.replace(',', ' ').split()

def frozen_member_test():
        frozen_members = ["'%s'" % f for f in members if f.endswith('_')]
        if frozen_members:
            return """
        frozen_fields = fields_to_modify & set([{frozen_members}])
        if frozen_fields:
            raise AttributeError('Cannot set frozen members %s' % ', '.join(frozen_fields))
            """.format(frozen_members=', '.join(frozen_members))

return ''

verbose_string = ""
    if sys.version_info < (3, 7):
        # Verbose is no longer supported in Python 3.7
        verbose_string = ", verbose={verbose}".format(verbose=verbose)

quoted_members = ', '.join("'%s'" % m for m in members)
    template = """
class {class_name}(namedtuple('ImmutableBase', [{quoted_members}]{verbose_string})):
    __slots__ = tuple()

def __repr__(self):
        return super({class_name}, self).__repr__().replace('ImmutableBase', self.__class__.__name__)

def set(self, **kwargs):
        if not kwargs:
            return self

fields_to_modify = set(kwargs.keys())
        if not fields_to_modify <= {member_set}:
            raise AttributeError("'%s' is not a member" % ', '.join(fields_to_modify - {member_set}))

{frozen_member_test}

return self.__class__.__new__(self.__class__, *map(kwargs.pop, [{quoted_members}], self))
""".format(quoted_members=quoted_members,
               member_set="set([%s])" % quoted_members if quoted_members else 'set()',
               frozen_member_test=frozen_member_test(),
               verbose_string=verbose_string,
               class_name=name)

if verbose:
        print(template)

from collections import namedtuple
    namespace = dict(namedtuple=namedtuple, __name__='pyrsistent_immutable')
    try:
        six.exec_(template, namespace)
    except SyntaxError as e:
        raise SyntaxError(e.message + ':\n' + template)

return namespace[name]

Batal

⬅ site-packages 21 item

Nama	Tipe	Ukuran	Diubah	Perm	Aksi
📁 __pycache__	dir	—	13/09/24 08:06	0755	📂
🐍 __init__.py	py	1.4 KB	07/07/18 20:53	0644	✏️ ⬇
📄 __init__.pyi	pyi	4.9 KB	20/12/18 04:07	0644	✏️ ⬇
🐍 _checked_types.py	py	17.9 KB	14/10/18 17:06	0644	✏️ ⬇
🐍 _compat.py	py	521 B	14/10/18 17:06	0644	✏️ ⬇
🐍 _field_common.py	py	10.6 KB	14/10/18 17:06	0644	✏️ ⬇
🐍 _helpers.py	py	2.4 KB	07/07/18 20:53	0644	✏️ ⬇
🐍 _immutable.py	py	3.5 KB	08/07/18 14:16	0644	✏️ ⬇
🐍 _pbag.py	py	6.6 KB	14/10/18 17:06	0644	✏️ ⬇
🐍 _pclass.py	py	9.2 KB	17/11/18 12:52	0644	✏️ ⬇
🐍 _pdeque.py	py	11.9 KB	14/10/18 17:06	0644	✏️ ⬇
🐍 _plist.py	py	8.1 KB	14/10/18 17:06	0644	✏️ ⬇
🐍 _pmap.py	py	14.3 KB	14/10/18 17:06	0644	✏️ ⬇
🐍 _precord.py	py	6.4 KB	17/11/18 12:52	0644	✏️ ⬇
🐍 _pset.py	py	5.6 KB	14/10/18 17:06	0644	✏️ ⬇
🐍 _pvector.py	py	22.2 KB	14/10/18 17:06	0644	✏️ ⬇
🐍 _toolz.py	py	3.3 KB	07/07/18 20:53	0644	✏️ ⬇
🐍 _transformations.py	py	3.5 KB	07/07/18 20:53	0644	✏️ ⬇
📄 py.typed	typed	0 B	21/11/18 04:52	0644	✏️ ⬇
🐍 typing.py	py	1.4 KB	17/11/18 12:52	0644	✏️ ⬇
📄 typing.pyi	pyi	6.9 KB	21/11/18 04:52	0644	✏️ ⬇

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