Restoring authorship annotation for <zubchick@yandex-team.ru>. Commit 1 of 2.

1 files changed, 254 insertions, 254 deletions

diff --git a/contrib/python/attrs/attr/_make.py b/contrib/python/attrs/attr/_make.py
index a1912b1233..d00b783881 100644
--- a/contrib/python/attrs/attr/_make.py
+++ b/contrib/python/attrs/attr/_make.py
@@ -5,7 +5,7 @@ import inspect
 import linecache
 import sys
 import threading
-import uuid
+import uuid 
 import warnings
 
 from operator import itemgetter
@@ -54,10 +54,10 @@ _hash_cache_field = "_attrs_cached_hash"
 
 _empty_metadata_singleton = metadata_proxy({})
 
-# Unique object for unequivocal getattr() defaults.
-_sentinel = object()
-
+# Unique object for unequivocal getattr() defaults. 
+_sentinel = object() 
 
+ 
 class _Nothing(object):
     """
     Sentinel class to indicate the lack of a value when ``None`` is ambiguous.
@@ -119,7 +119,7 @@ def attrib(
     default=NOTHING,
     validator=None,
     repr=True,
-    cmp=None,
+    cmp=None, 
     hash=None,
     init=True,
     metadata=None,
@@ -127,8 +127,8 @@ def attrib(
     converter=None,
     factory=None,
     kw_only=False,
-    eq=None,
-    order=None,
+    eq=None, 
+    order=None, 
     on_setattr=None,
 ):
     """
@@ -137,30 +137,30 @@ def attrib(
     ..  warning::
 
         Does *not* do anything unless the class is also decorated with
-        `attr.s`!
+        `attr.s`! 
 
     :param default: A value that is used if an ``attrs``-generated ``__init__``
         is used and no value is passed while instantiating or the attribute is
         excluded using ``init=False``.
 
-        If the value is an instance of `Factory`, its callable will be
+        If the value is an instance of `Factory`, its callable will be 
         used to construct a new value (useful for mutable data types like lists
         or dicts).
 
         If a default is not set (or set manually to `attr.NOTHING`), a value
-        *must* be supplied when instantiating; otherwise a `TypeError`
+        *must* be supplied when instantiating; otherwise a `TypeError` 
         will be raised.
 
         The default can also be set using decorator notation as shown below.
 
-    :type default: Any value
+    :type default: Any value 
 
     :param callable factory: Syntactic sugar for
         ``default=attr.Factory(factory)``.
 
-    :param validator: `callable` that is called by ``attrs``-generated
+    :param validator: `callable` that is called by ``attrs``-generated 
         ``__init__`` methods after the instance has been initialized.  They
-        receive the initialized instance, the `Attribute`, and the
+        receive the initialized instance, the `Attribute`, and the 
         passed value.
 
         The return value is *not* inspected so the validator has to throw an
@@ -170,30 +170,30 @@ def attrib(
         all pass.
 
         Validators can be globally disabled and re-enabled using
-        `get_run_validators`.
+        `get_run_validators`. 
 
         The validator can also be set using decorator notation as shown below.
 
     :type validator: `callable` or a `list` of `callable`\\ s.
 
-    :param repr: Include this attribute in the generated ``__repr__``
-        method. If ``True``, include the attribute; if ``False``, omit it. By
-        default, the built-in ``repr()`` function is used. To override how the
-        attribute value is formatted, pass a ``callable`` that takes a single
-        value and returns a string. Note that the resulting string is used
-        as-is, i.e. it will be used directly *instead* of calling ``repr()``
-        (the default).
+    :param repr: Include this attribute in the generated ``__repr__`` 
+        method. If ``True``, include the attribute; if ``False``, omit it. By 
+        default, the built-in ``repr()`` function is used. To override how the 
+        attribute value is formatted, pass a ``callable`` that takes a single 
+        value and returns a string. Note that the resulting string is used 
+        as-is, i.e. it will be used directly *instead* of calling ``repr()`` 
+        (the default). 
     :type repr: a `bool` or a `callable` to use a custom function.
 
     :param eq: If ``True`` (default), include this attribute in the
-        generated ``__eq__`` and ``__ne__`` methods that check two instances
+        generated ``__eq__`` and ``__ne__`` methods that check two instances 
         for equality. To override how the attribute value is compared,
         pass a ``callable`` that takes a single value and returns the value
         to be compared.
     :type eq: a `bool` or a `callable`.
 
     :param order: If ``True`` (default), include this attributes in the
-        generated ``__lt__``, ``__le__``, ``__gt__`` and ``__ge__`` methods.
+        generated ``__lt__``, ``__le__``, ``__gt__`` and ``__ge__`` methods. 
         To override how the attribute value is ordered,
         pass a ``callable`` that takes a single value and returns the value
         to be ordered.
@@ -211,13 +211,13 @@ def attrib(
         method.  It is possible to set this to ``False`` and set a default
         value.  In that case this attributed is unconditionally initialized
         with the specified default value or factory.
-    :param callable converter: `callable` that is called by
+    :param callable converter: `callable` that is called by 
         ``attrs``-generated ``__init__`` methods to convert attribute's value
         to the desired format.  It is given the passed-in value, and the
         returned value will be used as the new value of the attribute.  The
         value is converted before being passed to the validator, if any.
     :param metadata: An arbitrary mapping, to be used by third-party
-        components.  See `extending_metadata`.
+        components.  See `extending_metadata`. 
     :param type: The type of the attribute.  In Python 3.6 or greater, the
         preferred method to specify the type is using a variable annotation
         (see `PEP 526 <https://www.python.org/dev/peps/pep-0526/>`_).
@@ -227,7 +227,7 @@ def attrib(
 
         Please note that ``attrs`` doesn't do anything with this metadata by
         itself. You can use it as part of your own code or for
-        `static type checking <types>`.
+        `static type checking <types>`. 
     :param kw_only: Make this attribute keyword-only (Python 3+)
         in the generated ``__init__`` (if ``init`` is ``False``, this
         parameter is ignored).
@@ -242,7 +242,7 @@ def attrib(
     .. versionadded:: 16.3.0 *metadata*
     .. versionchanged:: 17.1.0 *validator* can be a ``list`` now.
     .. versionchanged:: 17.1.0
-       *hash* is ``None`` and therefore mirrors *eq* by default.
+       *hash* is ``None`` and therefore mirrors *eq* by default. 
     .. versionadded:: 17.3.0 *type*
     .. deprecated:: 17.4.0 *convert*
     .. versionadded:: 17.4.0 *converter* as a replacement for the deprecated
@@ -251,9 +251,9 @@ def attrib(
        ``factory=f`` is syntactic sugar for ``default=attr.Factory(f)``.
     .. versionadded:: 18.2.0 *kw_only*
     .. versionchanged:: 19.2.0 *convert* keyword argument removed.
-    .. versionchanged:: 19.2.0 *repr* also accepts a custom callable.
-    .. deprecated:: 19.2.0 *cmp* Removal on or after 2021-06-01.
-    .. versionadded:: 19.2.0 *eq* and *order*
+    .. versionchanged:: 19.2.0 *repr* also accepts a custom callable. 
+    .. deprecated:: 19.2.0 *cmp* Removal on or after 2021-06-01. 
+    .. versionadded:: 19.2.0 *eq* and *order* 
     .. versionadded:: 20.1.0 *on_setattr*
     .. versionchanged:: 20.3.0 *kw_only* backported to Python 2
     .. versionchanged:: 21.1.0
@@ -263,7 +263,7 @@ def attrib(
     eq, eq_key, order, order_key = _determine_attrib_eq_order(
         cmp, eq, order, True
     )
-
+ 
     if hash is not None and hash is not True and hash is not False:
         raise TypeError(
             "Invalid value for hash.  Must be True, False, or None."
@@ -296,16 +296,16 @@ def attrib(
         default=default,
         validator=validator,
         repr=repr,
-        cmp=None,
+        cmp=None, 
         hash=hash,
         init=init,
         converter=converter,
         metadata=metadata,
         type=type,
         kw_only=kw_only,
-        eq=eq,
+        eq=eq, 
         eq_key=eq_key,
-        order=order,
+        order=order, 
         order_key=order_key,
         on_setattr=on_setattr,
     )
@@ -581,19 +581,19 @@ def _transform_attrs(
 
     attrs = AttrsClass(base_attrs + own_attrs)
 
-    # Mandatory vs non-mandatory attr order only matters when they are part of
-    # the __init__ signature and when they aren't kw_only (which are moved to
-    # the end and can be mandatory or non-mandatory in any order, as they will
-    # be specified as keyword args anyway). Check the order of those attrs:
+    # Mandatory vs non-mandatory attr order only matters when they are part of 
+    # the __init__ signature and when they aren't kw_only (which are moved to 
+    # the end and can be mandatory or non-mandatory in any order, as they will 
+    # be specified as keyword args anyway). Check the order of those attrs: 
     had_default = False
-    for a in (a for a in attrs if a.init is not False and a.kw_only is False):
-        if had_default is True and a.default is NOTHING:
+    for a in (a for a in attrs if a.init is not False and a.kw_only is False): 
+        if had_default is True and a.default is NOTHING: 
             raise ValueError(
                 "No mandatory attributes allowed after an attribute with a "
                 "default value or factory.  Attribute in question: %r" % (a,)
             )
-
-        if had_default is False and a.default is not NOTHING:
+ 
+        if had_default is False and a.default is not NOTHING: 
             had_default = True
 
     if field_transformer is not None:
@@ -937,10 +937,10 @@ class _ClassBuilder(object):
     def add_hash(self):
         self._cls_dict["__hash__"] = self._add_method_dunders(
             _make_hash(
-                self._cls,
-                self._attrs,
-                frozen=self._frozen,
-                cache_hash=self._cache_hash,
+                self._cls, 
+                self._attrs, 
+                frozen=self._frozen, 
+                cache_hash=self._cache_hash, 
             )
         )
 
@@ -949,7 +949,7 @@ class _ClassBuilder(object):
     def add_init(self):
         self._cls_dict["__init__"] = self._add_method_dunders(
             _make_init(
-                self._cls,
+                self._cls, 
                 self._attrs,
                 self._has_pre_init,
                 self._has_post_init,
@@ -986,7 +986,7 @@ class _ClassBuilder(object):
 
         return self
 
-    def add_eq(self):
+    def add_eq(self): 
         cd = self._cls_dict
 
         cd["__eq__"] = self._add_method_dunders(
@@ -996,16 +996,16 @@ class _ClassBuilder(object):
 
         return self
 
-    def add_order(self):
-        cd = self._cls_dict
-
-        cd["__lt__"], cd["__le__"], cd["__gt__"], cd["__ge__"] = (
-            self._add_method_dunders(meth)
-            for meth in _make_order(self._cls, self._attrs)
-        )
-
-        return self
-
+    def add_order(self): 
+        cd = self._cls_dict 
+ 
+        cd["__lt__"], cd["__le__"], cd["__gt__"], cd["__ge__"] = ( 
+            self._add_method_dunders(meth) 
+            for meth in _make_order(self._cls, self._attrs) 
+        ) 
+ 
+        return self 
+ 
     def add_setattr(self):
         if self._frozen:
             return self
@@ -1068,38 +1068,38 @@ class _ClassBuilder(object):
         return method
 
 
-_CMP_DEPRECATION = (
-    "The usage of `cmp` is deprecated and will be removed on or after "
-    "2021-06-01.  Please use `eq` and `order` instead."
-)
-
-
+_CMP_DEPRECATION = ( 
+    "The usage of `cmp` is deprecated and will be removed on or after " 
+    "2021-06-01.  Please use `eq` and `order` instead." 
+) 
+ 
+ 
 def _determine_attrs_eq_order(cmp, eq, order, default_eq):
-    """
-    Validate the combination of *cmp*, *eq*, and *order*. Derive the effective
+    """ 
+    Validate the combination of *cmp*, *eq*, and *order*. Derive the effective 
     values of eq and order.  If *eq* is None, set it to *default_eq*.
-    """
-    if cmp is not None and any((eq is not None, order is not None)):
-        raise ValueError("Don't mix `cmp` with `eq' and `order`.")
-
-    # cmp takes precedence due to bw-compatibility.
-    if cmp is not None:
-        return cmp, cmp
-
+    """ 
+    if cmp is not None and any((eq is not None, order is not None)): 
+        raise ValueError("Don't mix `cmp` with `eq' and `order`.") 
+ 
+    # cmp takes precedence due to bw-compatibility. 
+    if cmp is not None: 
+        return cmp, cmp 
+ 
     # If left None, equality is set to the specified default and ordering
     # mirrors equality.
-    if eq is None:
+    if eq is None: 
         eq = default_eq
-
-    if order is None:
-        order = eq
-
-    if eq is False and order is True:
-        raise ValueError("`order` can only be True if `eq` is True too.")
-
-    return eq, order
-
-
+ 
+    if order is None: 
+        order = eq 
+ 
+    if eq is False and order is True: 
+        raise ValueError("`order` can only be True if `eq` is True too.") 
+ 
+    return eq, order 
+ 
+ 
 def _determine_attrib_eq_order(cmp, eq, order, default_eq):
     """
     Validate the combination of *cmp*, *eq*, and *order*. Derive the effective
@@ -1174,7 +1174,7 @@ def attrs(
     these=None,
     repr_ns=None,
     repr=None,
-    cmp=None,
+    cmp=None, 
     hash=None,
     init=None,
     slots=False,
@@ -1185,8 +1185,8 @@ def attrs(
     kw_only=False,
     cache_hash=False,
     auto_exc=False,
-    eq=None,
-    order=None,
+    eq=None, 
+    order=None, 
     auto_detect=False,
     collect_by_mro=False,
     getstate_setstate=None,
@@ -1196,9 +1196,9 @@ def attrs(
     r"""
     A class decorator that adds `dunder
     <https://wiki.python.org/moin/DunderAlias>`_\ -methods according to the
-    specified attributes using `attr.ib` or the *these* argument.
+    specified attributes using `attr.ib` or the *these* argument. 
 
-    :param these: A dictionary of name to `attr.ib` mappings.  This is
+    :param these: A dictionary of name to `attr.ib` mappings.  This is 
         useful to avoid the definition of your attributes within the class body
         because you can't (e.g. if you want to add ``__repr__`` methods to
         Django models) or don't want to.
@@ -1206,12 +1206,12 @@ def attrs(
         If *these* is not ``None``, ``attrs`` will *not* search the class body
         for attributes and will *not* remove any attributes from it.
 
-        If *these* is an ordered dict (`dict` on Python 3.6+,
-        `collections.OrderedDict` otherwise), the order is deduced from
+        If *these* is an ordered dict (`dict` on Python 3.6+, 
+        `collections.OrderedDict` otherwise), the order is deduced from 
         the order of the attributes inside *these*.  Otherwise the order
         of the definition of the attributes is used.
 
-    :type these: `dict` of `str` to `attr.ib`
+    :type these: `dict` of `str` to `attr.ib` 
 
     :param str repr_ns: When using nested classes, there's no way in Python 2
         to automatically detect that.  Therefore it's possible to set the
@@ -1246,11 +1246,11 @@ def attrs(
         representation of ``attrs`` attributes..
     :param bool str: Create a ``__str__`` method that is identical to
         ``__repr__``.  This is usually not necessary except for
-        `Exception`\ s.
+        `Exception`\ s. 
     :param Optional[bool] eq: If ``True`` or ``None`` (default), add ``__eq__``
         and ``__ne__`` methods that check two instances for equality.
-
-        They compare the instances as if they were tuples of their ``attrs``
+ 
+        They compare the instances as if they were tuples of their ``attrs`` 
         attributes if and only if the types of both classes are *identical*!
     :param Optional[bool] order: If ``True``, add ``__lt__``, ``__le__``,
         ``__gt__``, and ``__ge__`` methods that behave like *eq* above and
@@ -1262,9 +1262,9 @@ def attrs(
         is generated according how *eq* and *frozen* are set.
 
         1. If *both* are True, ``attrs`` will generate a ``__hash__`` for you.
-        2. If *eq* is True and *frozen* is False, ``__hash__`` will be set to
+        2. If *eq* is True and *frozen* is False, ``__hash__`` will be set to 
            None, marking it unhashable (which it is).
-        3. If *eq* is False, ``__hash__`` will be left untouched meaning the
+        3. If *eq* is False, ``__hash__`` will be left untouched meaning the 
            ``__hash__`` method of the base class will be used (if base class is
            ``object``, this means it will fall back to id-based hashing.).
 
@@ -1273,10 +1273,10 @@ def attrs(
         didn't freeze it programmatically) by passing ``True`` or not.  Both of
         these cases are rather special and should be used carefully.
 
-        See our documentation on `hashing`, Python's documentation on
-        `object.__hash__`, and the `GitHub issue that led to the default \
-        behavior <https://github.com/python-attrs/attrs/issues/136>`_ for more
-        details.
+        See our documentation on `hashing`, Python's documentation on 
+        `object.__hash__`, and the `GitHub issue that led to the default \ 
+        behavior <https://github.com/python-attrs/attrs/issues/136>`_ for more 
+        details. 
     :param bool init: Create a ``__init__`` method that initializes the
         ``attrs`` attributes. Leading underscores are stripped for the argument
         name. If a ``__attrs_pre_init__`` method exists on the class, it will
@@ -1288,13 +1288,13 @@ def attrs(
         injected instead. This allows you to define a custom ``__init__``
         method that can do pre-init work such as ``super().__init__()``,
         and then call ``__attrs_init__()`` and ``__attrs_post_init__()``.
-    :param bool slots: Create a `slotted class <slotted classes>` that's more
+    :param bool slots: Create a `slotted class <slotted classes>` that's more 
         memory-efficient. Slotted classes are generally superior to the default
         dict classes, but have some gotchas you should know about, so we
         encourage you to read the `glossary entry <slotted classes>`.
     :param bool frozen: Make instances immutable after initialization.  If
         someone attempts to modify a frozen instance,
-        `attr.exceptions.FrozenInstanceError` is raised.
+        `attr.exceptions.FrozenInstanceError` is raised. 
 
         .. note::
 
@@ -1303,7 +1303,7 @@ def attrs(
 
             2. True immutability is impossible in Python.
 
-            3. This *does* have a minor a runtime performance `impact
+            3. This *does* have a minor a runtime performance `impact 
                <how-frozen>` when initializing new instances.  In other words:
                ``__init__`` is slightly slower with ``frozen=True``.
 
@@ -1320,18 +1320,18 @@ def attrs(
         attributes (Python 3.6 and later only) from the class body.
 
         In this case, you **must** annotate every field.  If ``attrs``
-        encounters a field that is set to an `attr.ib` but lacks a type
-        annotation, an `attr.exceptions.UnannotatedAttributeError` is
+        encounters a field that is set to an `attr.ib` but lacks a type 
+        annotation, an `attr.exceptions.UnannotatedAttributeError` is 
         raised.  Use ``field_name: typing.Any = attr.ib(...)`` if you don't
         want to set a type.
 
         If you assign a value to those attributes (e.g. ``x: int = 42``), that
         value becomes the default value like if it were passed using
-        ``attr.ib(default=42)``.  Passing an instance of `Factory` also
+        ``attr.ib(default=42)``.  Passing an instance of `Factory` also 
         works as expected in most cases (see warning below).
 
-        Attributes annotated as `typing.ClassVar`, and attributes that are
-        neither annotated nor set to an `attr.ib` are **ignored**.
+        Attributes annotated as `typing.ClassVar`, and attributes that are 
+        neither annotated nor set to an `attr.ib` are **ignored**. 
 
         .. warning::
            For features that use the attribute name to create decorators (e.g.
@@ -1353,15 +1353,15 @@ def attrs(
         fields involved in hash code computation or mutations of the objects
         those fields point to after object creation.  If such changes occur,
         the behavior of the object's hash code is undefined.
-    :param bool auto_exc: If the class subclasses `BaseException`
+    :param bool auto_exc: If the class subclasses `BaseException` 
         (which implicitly includes any subclass of any exception), the
         following happens to behave like a well-behaved Python exceptions
         class:
 
-        - the values for *eq*, *order*, and *hash* are ignored and the
-          instances compare and hash by the instance's ids (N.B. ``attrs`` will
-          *not* remove existing implementations of ``__hash__`` or the equality
-          methods. It just won't add own ones.),
+        - the values for *eq*, *order*, and *hash* are ignored and the 
+          instances compare and hash by the instance's ids (N.B. ``attrs`` will 
+          *not* remove existing implementations of ``__hash__`` or the equality 
+          methods. It just won't add own ones.), 
         - all attributes that are either passed into ``__init__`` or have a
           default value are additionally available as a tuple in the ``args``
           attribute,
@@ -1420,17 +1420,17 @@ def attrs(
     .. versionadded:: 18.2.0 *weakref_slot*
     .. deprecated:: 18.2.0
        ``__lt__``, ``__le__``, ``__gt__``, and ``__ge__`` now raise a
-       `DeprecationWarning` if the classes compared are subclasses of
+       `DeprecationWarning` if the classes compared are subclasses of 
        each other. ``__eq`` and ``__ne__`` never tried to compared subclasses
        to each other.
-    .. versionchanged:: 19.2.0
-       ``__lt__``, ``__le__``, ``__gt__``, and ``__ge__`` now do not consider
-       subclasses comparable anymore.
+    .. versionchanged:: 19.2.0 
+       ``__lt__``, ``__le__``, ``__gt__``, and ``__ge__`` now do not consider 
+       subclasses comparable anymore. 
     .. versionadded:: 18.2.0 *kw_only*
     .. versionadded:: 18.2.0 *cache_hash*
     .. versionadded:: 19.1.0 *auto_exc*
-    .. deprecated:: 19.2.0 *cmp* Removal on or after 2021-06-01.
-    .. versionadded:: 19.2.0 *eq* and *order*
+    .. deprecated:: 19.2.0 *cmp* Removal on or after 2021-06-01. 
+    .. versionadded:: 19.2.0 *eq* and *order* 
     .. versionadded:: 20.1.0 *auto_detect*
     .. versionadded:: 20.1.0 *collect_by_mro*
     .. versionadded:: 20.1.0 *getstate_setstate*
@@ -1499,11 +1499,11 @@ def attrs(
             cls, eq_, auto_detect, ("__eq__", "__ne__")
         )
         if not is_exc and eq is True:
-            builder.add_eq()
+            builder.add_eq() 
         if not is_exc and _determine_whether_to_implement(
             cls, order_, auto_detect, ("__lt__", "__le__", "__gt__", "__ge__")
         ):
-            builder.add_order()
+            builder.add_order() 
 
         builder.add_setattr()
 
@@ -1520,9 +1520,9 @@ def attrs(
             raise TypeError(
                 "Invalid value for hash.  Must be True, False, or None."
             )
-        elif hash is False or (hash is None and eq is False) or is_exc:
-            # Don't do anything. Should fall back to __object__'s __hash__
-            # which is by id.
+        elif hash is False or (hash is None and eq is False) or is_exc: 
+            # Don't do anything. Should fall back to __object__'s __hash__ 
+            # which is by id. 
             if cache_hash:
                 raise TypeError(
                     "Invalid value for cache_hash.  To use hash caching,"
@@ -1532,10 +1532,10 @@ def attrs(
         elif hash is True or (
             hash is None and eq is True and is_frozen is True
         ):
-            # Build a __hash__ if told so, or if it's safe.
+            # Build a __hash__ if told so, or if it's safe. 
             builder.add_hash()
         else:
-            # Raise TypeError on attempts to hash.
+            # Raise TypeError on attempts to hash. 
             if cache_hash:
                 raise TypeError(
                     "Invalid value for cache_hash.  To use hash caching,"
@@ -1597,44 +1597,44 @@ else:
         return cls.__setattr__ == _frozen_setattrs
 
 
-def _generate_unique_filename(cls, func_name):
-    """
-    Create a "filename" suitable for a function being generated.
-    """
-    unique_id = uuid.uuid4()
-    extra = ""
-    count = 1
-
-    while True:
-        unique_filename = "<attrs generated {0} {1}.{2}{3}>".format(
-            func_name,
-            cls.__module__,
-            getattr(cls, "__qualname__", cls.__name__),
-            extra,
-        )
-        # To handle concurrency we essentially "reserve" our spot in
-        # the linecache with a dummy line.  The caller can then
-        # set this value correctly.
-        cache_line = (1, None, (str(unique_id),), unique_filename)
-        if (
-            linecache.cache.setdefault(unique_filename, cache_line)
-            == cache_line
-        ):
-            return unique_filename
-
-        # Looks like this spot is taken. Try again.
-        count += 1
-        extra = "-{0}".format(count)
-
-
-def _make_hash(cls, attrs, frozen, cache_hash):
+def _generate_unique_filename(cls, func_name): 
+    """ 
+    Create a "filename" suitable for a function being generated. 
+    """ 
+    unique_id = uuid.uuid4() 
+    extra = "" 
+    count = 1 
+ 
+    while True: 
+        unique_filename = "<attrs generated {0} {1}.{2}{3}>".format( 
+            func_name, 
+            cls.__module__, 
+            getattr(cls, "__qualname__", cls.__name__), 
+            extra, 
+        ) 
+        # To handle concurrency we essentially "reserve" our spot in 
+        # the linecache with a dummy line.  The caller can then 
+        # set this value correctly. 
+        cache_line = (1, None, (str(unique_id),), unique_filename) 
+        if ( 
+            linecache.cache.setdefault(unique_filename, cache_line) 
+            == cache_line 
+        ): 
+            return unique_filename 
+ 
+        # Looks like this spot is taken. Try again. 
+        count += 1 
+        extra = "-{0}".format(count) 
+ 
+ 
+def _make_hash(cls, attrs, frozen, cache_hash): 
     attrs = tuple(
-        a for a in attrs if a.hash is True or (a.hash is None and a.eq is True)
+        a for a in attrs if a.hash is True or (a.hash is None and a.eq is True) 
     )
 
     tab = "        "
 
-    unique_filename = _generate_unique_filename(cls, "hash")
+    unique_filename = _generate_unique_filename(cls, "hash") 
     type_hash = hash(unique_filename)
 
     hash_def = "def __hash__(self"
@@ -1697,7 +1697,7 @@ def _add_hash(cls, attrs):
     """
     Add a hash method to *cls*.
     """
-    cls.__hash__ = _make_hash(cls, attrs, frozen=False, cache_hash=False)
+    cls.__hash__ = _make_hash(cls, attrs, frozen=False, cache_hash=False) 
     return cls
 
 
@@ -1720,13 +1720,13 @@ def _make_ne():
     return __ne__
 
 
-def _make_eq(cls, attrs):
+def _make_eq(cls, attrs): 
     """
     Create __eq__ method for *cls* with *attrs*.
     """
-    attrs = [a for a in attrs if a.eq]
+    attrs = [a for a in attrs if a.eq] 
 
-    unique_filename = _generate_unique_filename(cls, "eq")
+    unique_filename = _generate_unique_filename(cls, "eq") 
     lines = [
         "def __eq__(self, other):",
         "    if other.__class__ is not self.__class__:",
@@ -1771,13 +1771,13 @@ def _make_eq(cls, attrs):
 
     return _make_method("__eq__", script, unique_filename, globs)
 
-
-def _make_order(cls, attrs):
+ 
+def _make_order(cls, attrs): 
     """
     Create ordering methods for *cls* with *attrs*.
     """
-    attrs = [a for a in attrs if a.order]
-
+    attrs = [a for a in attrs if a.order] 
+ 
     def attrs_to_tuple(obj):
         """
         Save us some typing.
@@ -1793,44 +1793,44 @@ def _make_order(cls, attrs):
         """
         Automatically created by attrs.
         """
-        if other.__class__ is self.__class__:
+        if other.__class__ is self.__class__: 
             return attrs_to_tuple(self) < attrs_to_tuple(other)
 
-        return NotImplemented
-
+        return NotImplemented 
+ 
     def __le__(self, other):
         """
         Automatically created by attrs.
         """
-        if other.__class__ is self.__class__:
+        if other.__class__ is self.__class__: 
             return attrs_to_tuple(self) <= attrs_to_tuple(other)
 
-        return NotImplemented
-
+        return NotImplemented 
+ 
     def __gt__(self, other):
         """
         Automatically created by attrs.
         """
-        if other.__class__ is self.__class__:
+        if other.__class__ is self.__class__: 
             return attrs_to_tuple(self) > attrs_to_tuple(other)
 
-        return NotImplemented
-
+        return NotImplemented 
+ 
     def __ge__(self, other):
         """
         Automatically created by attrs.
         """
-        if other.__class__ is self.__class__:
+        if other.__class__ is self.__class__: 
             return attrs_to_tuple(self) >= attrs_to_tuple(other)
 
-        return NotImplemented
-
-    return __lt__, __le__, __gt__, __ge__
+        return NotImplemented 
 
+    return __lt__, __le__, __gt__, __ge__ 
 
-def _add_eq(cls, attrs=None):
+ 
+def _add_eq(cls, attrs=None): 
     """
-    Add equality methods to *cls* with *attrs*.
+    Add equality methods to *cls* with *attrs*. 
     """
     if attrs is None:
         attrs = cls.__attrs_attrs__
@@ -1846,18 +1846,18 @@ _already_repring = threading.local()
 
 def _make_repr(attrs, ns):
     """
-    Make a repr method that includes relevant *attrs*, adding *ns* to the full
-    name.
+    Make a repr method that includes relevant *attrs*, adding *ns* to the full 
+    name. 
     """
 
-    # Figure out which attributes to include, and which function to use to
-    # format them. The a.repr value can be either bool or a custom callable.
-    attr_names_with_reprs = tuple(
-        (a.name, repr if a.repr is True else a.repr)
-        for a in attrs
-        if a.repr is not False
-    )
-
+    # Figure out which attributes to include, and which function to use to 
+    # format them. The a.repr value can be either bool or a custom callable. 
+    attr_names_with_reprs = tuple( 
+        (a.name, repr if a.repr is True else a.repr) 
+        for a in attrs 
+        if a.repr is not False 
+    ) 
+ 
     def __repr__(self):
         """
         Automatically created by attrs.
@@ -1888,14 +1888,14 @@ def _make_repr(attrs, ns):
         try:
             result = [class_name, "("]
             first = True
-            for name, attr_repr in attr_names_with_reprs:
+            for name, attr_repr in attr_names_with_reprs: 
                 if first:
                     first = False
                 else:
                     result.append(", ")
-                result.extend(
-                    (name, "=", attr_repr(getattr(self, name, NOTHING)))
-                )
+                result.extend( 
+                    (name, "=", attr_repr(getattr(self, name, NOTHING))) 
+                ) 
             return "".join(result) + ")"
         finally:
             working_set.remove(id(self))
@@ -1927,7 +1927,7 @@ def fields(cls):
     :raise attr.exceptions.NotAnAttrsClassError: If *cls* is not an ``attrs``
         class.
 
-    :rtype: tuple (with name accessors) of `attr.Attribute`
+    :rtype: tuple (with name accessors) of `attr.Attribute` 
 
     ..  versionchanged:: 16.2.0 Returned tuple allows accessing the fields
         by name.
@@ -1954,7 +1954,7 @@ def fields_dict(cls):
         class.
 
     :rtype: an ordered dict where keys are attribute names and values are
-        `attr.Attribute`\\ s. This will be a `dict` if it's
+        `attr.Attribute`\\ s. This will be a `dict` if it's 
         naturally ordered like on Python 3.6+ or an
         :class:`~collections.OrderedDict` otherwise.
 
@@ -2485,8 +2485,8 @@ class Attribute(object):
     :attribute inherited: Whether or not that attribute has been inherited from
         a base class.
 
-    Plus *all* arguments of `attr.ib` (except for ``factory``
-    which is only syntactic sugar for ``default=Factory(...)``.
+    Plus *all* arguments of `attr.ib` (except for ``factory`` 
+    which is only syntactic sugar for ``default=Factory(...)``. 
 
     .. versionadded:: 20.1.0 *inherited*
     .. versionadded:: 20.1.0 *on_setattr*
@@ -2502,9 +2502,9 @@ class Attribute(object):
         "default",
         "validator",
         "repr",
-        "eq",
+        "eq", 
         "eq_key",
-        "order",
+        "order", 
         "order_key",
         "hash",
         "init",
@@ -2522,7 +2522,7 @@ class Attribute(object):
         default,
         validator,
         repr,
-        cmp,  # XXX: unused, remove along with other cmp code.
+        cmp,  # XXX: unused, remove along with other cmp code. 
         hash,
         init,
         inherited,
@@ -2530,16 +2530,16 @@ class Attribute(object):
         type=None,
         converter=None,
         kw_only=False,
-        eq=None,
+        eq=None, 
         eq_key=None,
-        order=None,
+        order=None, 
         order_key=None,
         on_setattr=None,
     ):
         eq, eq_key, order, order_key = _determine_attrib_eq_order(
             cmp, eq_key or eq, order_key or order, True
         )
-
+ 
         # Cache this descriptor here to speed things up later.
         bound_setattr = _obj_setattr.__get__(self, Attribute)
 
@@ -2549,9 +2549,9 @@ class Attribute(object):
         bound_setattr("default", default)
         bound_setattr("validator", validator)
         bound_setattr("repr", repr)
-        bound_setattr("eq", eq)
+        bound_setattr("eq", eq) 
         bound_setattr("eq_key", eq_key)
-        bound_setattr("order", order)
+        bound_setattr("order", order) 
         bound_setattr("order_key", order_key)
         bound_setattr("hash", hash)
         bound_setattr("init", init)
@@ -2598,20 +2598,20 @@ class Attribute(object):
             validator=ca._validator,
             default=ca._default,
             type=type,
-            cmp=None,
+            cmp=None, 
             inherited=False,
             **inst_dict
         )
 
-    @property
-    def cmp(self):
-        """
-        Simulate the presence of a cmp attribute and warn.
-        """
-        warnings.warn(_CMP_DEPRECATION, DeprecationWarning, stacklevel=2)
-
-        return self.eq and self.order
-
+    @property 
+    def cmp(self): 
+        """ 
+        Simulate the presence of a cmp attribute and warn. 
+        """ 
+        warnings.warn(_CMP_DEPRECATION, DeprecationWarning, stacklevel=2) 
+ 
+        return self.eq and self.order 
+ 
     # Don't use attr.evolve since fields(Attribute) doesn't work
     def evolve(self, **changes):
         """
@@ -2666,9 +2666,9 @@ _a = [
         default=NOTHING,
         validator=None,
         repr=True,
-        cmp=None,
-        eq=True,
-        order=False,
+        cmp=None, 
+        eq=True, 
+        order=False, 
         hash=(name != "metadata"),
         init=True,
         inherited=False,
@@ -2698,9 +2698,9 @@ class _CountingAttr(object):
         "counter",
         "_default",
         "repr",
-        "eq",
+        "eq", 
         "eq_key",
-        "order",
+        "order", 
         "order_key",
         "hash",
         "init",
@@ -2717,40 +2717,40 @@ class _CountingAttr(object):
             default=NOTHING,
             validator=None,
             repr=True,
-            cmp=None,
+            cmp=None, 
             hash=True,
             init=True,
             kw_only=False,
-            eq=True,
+            eq=True, 
             eq_key=None,
-            order=False,
+            order=False, 
             order_key=None,
             inherited=False,
             on_setattr=None,
         )
-        for name in (
-            "counter",
-            "_default",
-            "repr",
-            "eq",
-            "order",
-            "hash",
-            "init",
+        for name in ( 
+            "counter", 
+            "_default", 
+            "repr", 
+            "eq", 
+            "order", 
+            "hash", 
+            "init", 
             "on_setattr",
-        )
+        ) 
     ) + (
         Attribute(
             name="metadata",
             default=None,
             validator=None,
             repr=True,
-            cmp=None,
+            cmp=None, 
             hash=False,
             init=True,
             kw_only=False,
-            eq=True,
+            eq=True, 
             eq_key=None,
-            order=False,
+            order=False, 
             order_key=None,
             inherited=False,
             on_setattr=None,
@@ -2770,9 +2770,9 @@ class _CountingAttr(object):
         metadata,
         type,
         kw_only,
-        eq,
+        eq, 
         eq_key,
-        order,
+        order, 
         order_key,
         on_setattr,
     ):
@@ -2782,9 +2782,9 @@ class _CountingAttr(object):
         self._validator = validator
         self.converter = converter
         self.repr = repr
-        self.eq = eq
+        self.eq = eq 
         self.eq_key = eq_key
-        self.order = order
+        self.order = order 
         self.order_key = order_key
         self.hash = hash
         self.init = init
@@ -2825,14 +2825,14 @@ class _CountingAttr(object):
         return meth
 
 
-_CountingAttr = _add_eq(_add_repr(_CountingAttr))
+_CountingAttr = _add_eq(_add_repr(_CountingAttr)) 
 
 
 class Factory(object):
     """
     Stores a factory callable.
 
-    If passed as the default value to `attr.ib`, the factory is used to
+    If passed as the default value to `attr.ib`, the factory is used to 
     generate a new value.
 
     :param callable factory: A callable that takes either none or exactly one
@@ -2895,15 +2895,15 @@ def make_class(name, attrs, bases=(object,), **attributes_arguments):
     :param attrs: A list of names or a dictionary of mappings of names to
         attributes.
 
-        If *attrs* is a list or an ordered dict (`dict` on Python 3.6+,
-        `collections.OrderedDict` otherwise), the order is deduced from
+        If *attrs* is a list or an ordered dict (`dict` on Python 3.6+, 
+        `collections.OrderedDict` otherwise), the order is deduced from 
         the order of the names or attributes inside *attrs*.  Otherwise the
         order of the definition of the attributes is used.
-    :type attrs: `list` or `dict`
+    :type attrs: `list` or `dict` 
 
     :param tuple bases: Classes that the new class will subclass.
 
-    :param attributes_arguments: Passed unmodified to `attr.s`.
+    :param attributes_arguments: Passed unmodified to `attr.s`. 
 
     :return: A new class with *attrs*.
     :rtype: type
@@ -2943,8 +2943,8 @@ def make_class(name, attrs, bases=(object,), **attributes_arguments):
     except (AttributeError, ValueError):
         pass
 
-    # We do it here for proper warnings with meaningful stacklevel.
-    cmp = attributes_arguments.pop("cmp", None)
+    # We do it here for proper warnings with meaningful stacklevel. 
+    cmp = attributes_arguments.pop("cmp", None) 
     (
         attributes_arguments["eq"],
         attributes_arguments["order"],
@@ -2953,8 +2953,8 @@ def make_class(name, attrs, bases=(object,), **attributes_arguments):
         attributes_arguments.get("eq"),
         attributes_arguments.get("order"),
         True,
-    )
-
+    ) 
+ 
     return _attrs(these=cls_dict, **attributes_arguments)(type_)