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TypingMetaa Metaclass for most types defined in typing module
(not a part of public API).
This overrides __new__() to require an extra keyword parameter
'_root', which serves as a guard against naive subclassing of the
typing classes. Any legitimate class defined using a metaclass
derived from TypingMeta must pass _root=True.
This also defines a dummy constructor (all the work for most typing
constructs is done in __new__) and a nicer repr().
F)_rootc s2 |s t ddjtt|pd t j| |||S )NzCannot subclass %sz, z()) TypeErrorjoinmap
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localns first, of course).
rC )r[ globalnslocalnsrC rC rD
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Z S )rH z0Internal indicator of special typing constructs. __weakref__c O s d S )NrC )r[ r\ r] rC rC rD r^ s z_TypingBase.__init__c s@ t |dkr4t|d tr4t|d tr4td| t j| S )zConstructor.
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z_TypingBase.__new__c C s | S )NrC )r[ r_ r` rC rC rD ra s z_TypingBase._eval_typec C s d S )NrC )r[ rb rC rC rD rc s z_TypingBase._get_type_varsc C s" t | }tt|}d|j|f S )Nz%s.%s)typerM rE rd )r[ rV re rC rC rD rf s z_TypingBase.__repr__c O s t dt| d S )NzCannot instantiate %r)rP ro )r[ r\ r] rC rC rD __call__ s z_TypingBase.__call__)rj ) rA rd r@ rg __slots__r^ rU ra rc rf rp ri rC rC )rZ rD rH s rH T) metaclassrO c s2 e Zd ZdZf Zdd fdd
Zdd Z ZS )rI zInternal mix-in class to prevent instantiation.
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z_ForwardRef.__init__c C sf | j s||k r`|d kr*|d kr*i }}n|d kr8|}n |d krD|}tt| j||d| _d| _ | jS )Nz*Forward references must evaluate to types.T)rv _type_checkrx ru rw )r[ r_ r` rC rC rD ra s
z_ForwardRef._eval_typec C s& t |tstS | j|jko$| j|jkS )N)rl rG NotImplementedrt rw )r[ otherrC rC rD __eq__ s
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impl_type: The implementation type.
type_checker: Function that takes an impl_type instance.
and returns a value that should be a type_var instance.
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t t fkrtd| | S ) a Check that the argument is a type, and return it (internal helper).
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r} c C s` t | tr:t | t r:| jdkr(t| S d| jt| f S | dkrFdS t | tjrX| jS t| S )a; Return the repr() of an object, special-casing types (internal helper).
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rS c @ s$ e Zd ZdZf Zdd Zdd ZdS )_Anya` Special type indicating an unconstrained type.
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r c @ s$ e Zd ZdZf Zdd Zdd ZdS ) _NoReturna Special type indicating functions that never return.
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def stop() -> NoReturn:
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will fail in static type checkers.
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checkers. They serve as the parameters for generic types as well
as for generic function definitions. See class Generic for more
information on generic types. Generic functions work as follows:
def repeat(x: T, n: int) -> List[T]:
'''Return a list containing n references to x.'''
return [x]*n
def longest(x: A, y: A) -> A:
'''Return the longest of two strings.'''
return x if len(x) >= len(y) else y
The latter example's signature is essentially the overloading
of (str, str) -> str and (bytes, bytes) -> bytes. Also note
that if the arguments are instances of some subclass of str,
the return type is still plain str.
At runtime, isinstance(x, T) and issubclass(C, T) will raise TypeError.
Type variables defined with covariant=True or contravariant=True
can be used do declare covariant or contravariant generic types.
See PEP 484 for more details. By default generic types are invariant
in all type variables.
Type variables can be introspected. e.g.:
T.__name__ == 'T'
T.__constraints__ == ()
T.__covariant__ == False
T.__contravariant__ = False
A.__constraints__ == (str, bytes)
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r c C s | j dkr| S | j }g }x |j dk r6|j| |j }qW g }x | jD ]}|jt||| qDW x8|D ]0}g }x"|jD ]}|jt||j| qtW |}qdW |S )a An internal helper function: calculate substitution tree
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type(None).
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Union[Union[int, str], float] == Union[int, str, float]
- Unions of a single argument vanish, e.g.::
Union[int] == int # The constructor actually returns int
- Redundant arguments are skipped, e.g.::
Union[int, str, int] == Union[int, str]
- When comparing unions, the argument order is ignored, e.g.::
Union[int, str] == Union[str, int]
- When two arguments have a subclass relationship, the least
derived argument is kept, e.g.::
class Employee: pass
class Manager(Employee): pass
Union[int, Employee, Manager] == Union[int, Employee]
Union[Manager, int, Employee] == Union[int, Employee]
Union[Employee, Manager] == Employee
- Similar for object::
Union[int, object] == object
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c C s t |d}t|td f S )Nz#Optional[t] requires a single type.)r} r ro )r[ r{ rC rC rD r K s
z_Optional.__getitem__N)rA rd r@ rg rq r r rC rC rC rD r C s r c C sJ t }x@t| jdd D ]*\}}t|tr|jtkr| j|d }qW |S )zHelper for Generic.__new__.
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NrK )objectr __mro__rl r r r
)rV Z next_in_mror crC rC rD _next_in_mroT s
r c s, t jtjr fdd}n fdd}|S )zConstruct a __subclasshook__ callable that incorporates
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against cls.
c sZ j j| }|tk r|S j | jkr(dS x, j j D ] }t|trDq4t| |r4dS q4W tS )NT) __extra____subclasshook__r~ r __subclasses__rl r r )subclassresscls)rV rC rD
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z)_make_subclasshook.<locals>.__extrahook__c s j rt| j rdS tS )NT)r r r~ )r )rV rC rD r y s )rl r abcABCMeta)rV r rC )rV rD _make_subclasshookb s r c C s2 t | }d|kr.x |d D ]}|j|d qW |S )zInternal helper: copy class __dict__ and clean slots class variables.
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rq N)dictpop)ZdctZ dict_copyZslotrC rC rD _no_slots_copy s
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dd Zdd Zedd Z fdd Zd d Z fd d Z ZS )#r ac Metaclass for generic types.
This is a metaclass for typing.Generic and generic ABCs defined in
typing module. User defined subclasses of GenericMeta can override
__new__ and invoke super().__new__. Note that GenericMeta.__new__
has strict rules on what is allowed in its bases argument:
* plain Generic is disallowed in bases;
* Generic[...] should appear in bases at most once;
* if Generic[...] is present, then it should list all type variables
that appear in other bases.
In addition, type of all generic bases is erased, e.g., C[int] is
stripped to plain C.
Nc s |dk r0|dk st tdd |D s.t |n|dks@t ||dksPt ||dks`t |t|}d} xF|D ]>}
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Nc s s | ]}t |tV qd S )N)rl r )r r rC rC rD r s z&GenericMeta.__new__.<locals>.<genexpr>z!Cannot inherit from plain Genericz0Cannot inherit from Generic[...] multiple types.z6Some type variables (%s) are not listed in Generic[%s]z, c 3 s | ]}| krt |V qd S )N)rm )r r )gvarsetrC rD r s c s s | ]}t |V qd S )N)rm )r grC rC rD r s c s s" | ]}t |tr|jn|V qd S )N)rl r r )r brC rC rD r s c s s | ]}t |to|tk V qd S )N)rl r r
)r r rC rC rD r s c s s | ]}|t k r|V qd S )N)r
)r r rC rC rD r s )r r r T)rO r c s s* | ]"}|t krd n|tkr f n|V qdS ).N)_TypingEllipsis _TypingEmpty)r arC rC rD r s r rA r r@ )$r allr r
rP rl r r r r rQ ro r r rn r updater rT rU __setattr__r r __next_in_mro____orig_bases__r r r
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zGenericMeta.__new__c C s t | jtjr| jjS | jjS )N)rl r r r _abc_negative_cacher _abc_generic_negative_cache)r[ rC rC rD r s z GenericMeta._abc_negative_cachec C s, | j d kr(t| jtjr"|| j_n|| _d S )N)r rl r r r r r )r[ valuerC rC rD r s
c C s t | jtjr| jjS | jjS )N)rl r r r _abc_negative_cache_versionr #_abc_generic_negative_cache_version)r[ rC rC rD r s z'GenericMeta._abc_negative_cache_versionc C s, | j d kr(t| jtjr"|| j_n|| _d S )N)r rl r r r r r )r[ r rC rC rD r s
c C s | j r| jrt| j| d S )N)r r rc )r[ rb rC rC rD rc s zGenericMeta._get_type_varsc
s | j r| j j nd }| jr8t fdd| jD nd }|| j krT|| jkrT| S | j| j| jt| j|rtt |nd ||| j
| j dS )Nc 3 s | ]}t | V qd S )N)ra )r r )r_ r` rC rD r s z)GenericMeta._eval_type.<locals>.<genexpr>)rb r\ r r r ) r ra r rn rZ rA __bases__r __dict__r r r )r[ r_ r` r r rC )r_ r` rD ra s $zGenericMeta._eval_typec s" | j d krt j S | j| j S )N)r rT rf r r )r[ )rZ rC rD rf + s
zGenericMeta.__repr__c st g }xV|dd D ]F}|f kr*|j d qt|tsD|j t| q|j |d j| qW t j ddj| S )NrK z()r z[%s]z, )r rl rn rS r rT rf rQ )r[ r r r{ )rZ rC rD r 0 s
zGenericMeta._tree_reprc C s* | j d kr| S t| ||}| jft| S )N)r r r rn )r[ rb r\ r rC rC rD r ; s
zGenericMeta._subs_treec C s6 t |tstS | jd ks"|jd kr*| |kS | j|jkS )N)rl r r~ r r )r[ r rC rC rD r A s
zGenericMeta.__eq__c C s | j S )N)r )r[ rC rC rD r H s zGenericMeta.__hash__c
s6 t |ts|f}| r0| jtk r0tdt| d t fdd|D }| tkrtdd |D sltdtt |t|krtd|}|}nb| tt
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Nz)Parameter list to %s[...] cannot be emptyz*Parameters to generic types must be types.c 3 s | ]}t | V qd S )N)r} )r r )r rC rD r S s z*GenericMeta.__getitem__.<locals>.<genexpr>c s s | ]}t |tV qd S )N)rl r )r r rC rC rD r V s z5Parameters to Generic[...] must all be type variablesz-Parameters to Generic[...] must all be uniquez'Cannot subscript already-subscripted %s)rb r\ r r r )rl rn r r rP rE r
r rk r r r r r r r rZ rA r r r r r )r[ r rb r\ ZprependrC )r rD r K sJ
zGenericMeta.__getitem__c sJ | j d k r*tjdjd dkr&tddS | tkr>td| t j|S ) NrK rA r r zCParameterized generics cannot be used with class or instance checksFz5Class %r cannot be used with class or instance checks)r r )r r> _getframe f_globalsrP r
rT r )r[ rV )rZ rC rD r y s
z GenericMeta.__subclasscheck__c C s t |j| S )N)r rZ )r[ r rC rC rD r s z GenericMeta.__instancecheck__c sT |j dr|jds(|j ds(| jd kr<tt| j|| ntt| jj|| d S )N___abc_)rL endswithr rT r r )r[ attrr )rZ rC rD r s
zGenericMeta.__setattr__)NNNNN)NN)rA rd r@ rg rU propertyr setterr rc ra rf r r r r r r r r r ri rC rC )rZ rD r s"
`
. c O s |j d kr@| jtjkr,|jtjk r,| j|S | j|f||S nl|j}| jtjkrj|jtjk rj| j|}n| j|f||}y
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r Y nX |j|| |S d S )N)r rU r r^ r Z__orig_class__AttributeError)Zbase_clsrV r\ r] r r rC rC rD _generic_new s
r c @ s e Zd ZdZf Zdd ZdS )r
aC Abstract base class for generic types.
A generic type is typically declared by inheriting from
this class parameterized with one or more type variables.
For example, a generic mapping type might be defined as::
class Mapping(Generic[KT, VT]):
def __getitem__(self, key: KT) -> VT:
...
# Etc.
This class can then be used as follows::
def lookup_name(mapping: Mapping[KT, VT], key: KT, default: VT) -> VT:
try:
return mapping[key]
except KeyError:
return default
c O s& | j tkrtdt| j| f||S )NzHType Generic cannot be instantiated; it can be used only as a base class)r r
rP r r )rV r\ r] rC rC rD rU s
zGeneric.__new__N)rA rd r@ rg rq rU rC rC rC rD r
s )rr c @ s e Zd ZdZdS )r zInternal placeholder for () or []. Used by TupleMeta and CallableMeta
to allow empty list/tuple in specific places, without allowing them
to sneak in where prohibited.
N)rA rd r@ rg rC rC rC rD r s r c @ s e Zd ZdZdS )r z(Internal placeholder for ... (ellipsis).N)rA rd r@ rg rC rC rC rD r s r c s4 e Zd ZdZe fddZdd Zdd Z ZS ) TupleMetaz Metaclass for Tuple (internal).c s | j d k s| jtk r t j|S |f kr6t jtfS t|tsF|f}t|dkr|d dkrd t |d }t j|t
fS d t fdd|D }t j|S ) Nr rK .z Tuple[t, ...]: t must be a type.r z*Tuple[t0, t1, ...]: each t must be a type.c 3 s | ]}t | V qd S )N)r} )r r )r rC rD r s z(TupleMeta.__getitem__.<locals>.<genexpr>) r r r rT r r rl rn rk r} r )r[ r r )rZ )r rD r s
zTupleMeta.__getitem__c C s | j d krt|tS tdd S )Nz5Parameterized Tuple cannot be used with isinstance().)r rl rn rP )r[ r rC rC rD r s
zTupleMeta.__instancecheck__c C s | j d krt|tS tdd S )Nz5Parameterized Tuple cannot be used with issubclass().)r r rn rP )r[ rV rC rC rD r s
zTupleMeta.__subclasscheck__) rA rd r@ rg r r r r ri rC rC )rZ rD r
s r
c @ s e Zd ZdZf Zdd ZdS )r a@ Tuple type; Tuple[X, Y] is the cross-product type of X and Y.
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to type variables T1 and T2. Tuple[int, float, str] is a tuple
of an int, a float and a string.
To specify a variable-length tuple of homogeneous type, use Tuple[T, ...].
c O s$ | j tkrtdtt| f||S )Nz6Type Tuple cannot be instantiated; use tuple() instead)r r rP r rn )rV r\ r] rC rC rD rU s
z
Tuple.__new__N)rA rd r@ rg rq rU rC rC rC rD r s )r rr c sH e Zd ZdZ fddZ fddZ fddZe fdd Z Z S )
CallableMetaz"Metaclass for Callable (internal).c s" | j d krt j S | j| j S )N)r rT rf r r )r[ )rZ rC rD rf s
zCallableMeta.__repr__c s | j tk rt j|S g }xB|dd D ]2}t|tsF|jt| q(|j|d j| q(W |d dkrt|d d|d S t|d ddj |d d |d f S ) NrK r z...z [..., %s]z
[[%s], %s]z, r r )
r r rT r rl rn r rS r rQ )r[ r r r{ )rZ rC rD r s
zCallableMeta._tree_reprc s | j dk s| jtk r t j|S t|t s8t|dkr@td|\}}|t krZt |f}n$t|t
srtd|f t||f}| j |S )zxA thin wrapper around __getitem_inner__ to provide the latter
with hashable arguments to improve speed.
Nr z6Callable must be used as Callable[[arg, ...], result].z8Callable[args, result]: args must be a list. Got %.100r.) r r r rT r rl rn rk rP Ellipsislist__getitem_inner__)r[ r r\ result)rZ rC rD r * s
zCallableMeta.__getitem__c s^ |\}}d t | }|tkr.t jt|fS d t fdd|D }||f }t j|S )Nz.Callable[args, result]: result must be a type.z6Callable[[arg, ...], result]: each arg must be a type.c 3 s | ]}t | V qd S )N)r} )r r{ )r rC rD r F s z1CallableMeta.__getitem_inner__.<locals>.<genexpr>)r} r rT r r rn )r[ r r\ r )rZ )r rD r > s
z CallableMeta.__getitem_inner__)
rA rd r@ rg rf r r r r ri rC rC )rZ rD r s
r c @ s e Zd ZdZf Zdd ZdS )r a Callable type; Callable[[int], str] is a function of (int) -> str.
The subscription syntax must always be used with exactly two
values: the argument list and the return type. The argument list
must be a list of types or ellipsis; the return type must be a single type.
There is no syntax to indicate optional or keyword arguments,
such function types are rarely used as callback types.
c O s& | j tkrtdt| j| f||S )NzIType Callable cannot be instantiated; use a non-abstract subclass instead)r r rP r r )rV r\ r] rC rC rD rU X s
zCallable.__new__N)rA rd r@ rg rq rU rC rC rC rD r K s c sN e Zd ZdZdZdddZdd Zdd Z fd
d Zd d
Z dd Z
Z S )r a3 Special type construct to mark class variables.
An annotation wrapped in ClassVar indicates that a given
attribute is intended to be used as a class variable and
should not be set on instances of that class. Usage::
class Starship:
stats: ClassVar[Dict[str, int]] = {} # class variable
damage: int = 10 # instance variable
ClassVar accepts only types and cannot be further subscribed.
Note that ClassVar is not a class itself, and should not
be used with isinstance() or issubclass().
__type__Nc K s
|| _ d S )N)r )r[ tpr] rC rC rD r^ r s z_ClassVar.__init__c C sP t | }| jd kr4|t|dj|jdd ddS tdj|jdd d S )Nz {} accepts only single type.rK T)rO z {} cannot be further subscripted)ro r r} formatrA rP )r[ itemrV rC rC rD r u s
z_ClassVar.__getitem__c C s, t | j||}|| jkr | S t| |ddS )NT)rO )ra r ro )r[ r_ r` Znew_tprC rC rD ra ~ s
z_ClassVar._eval_typec s, t j }| jd k r(|djt| j7 }|S )Nz[{}])rT rf r r rS )r[ r)rZ rC rD rf s
z_ClassVar.__repr__c C s t t| j| jfS )N)r ro rA r )r[ rC rC rD r s z_ClassVar.__hash__c C s, t |tstS | jd k r$| j|jkS | |kS )N)rl r r~ r )r[ r rC rC rD r s
z_ClassVar.__eq__)r )N) rA rd r@ rg rq r^ r ra rf r r ri rC rC )rZ rD r _ s
r c C s |S )zCast a value to a type.
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signals that the return value has the designated type, but at
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to be as fast as possible).
rC )typvalrC rC rD r6 s c
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r i S X |j}|j}|d| }| jp@f }| j}|rTt|ni }|t| }x2t||d |D ] \}} ||kst | ||< qxW |S )z:Internal helper to extract the default arguments, by name.N)
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D ]>\}}|dkrztd}t|t rt |}t
|||}|||< qbW q*W |S |dkrt| tjr| j}n t | di }|dkr|}n |dkr|}t | dd}|dkr"t| tri S tdj| t| } t|}xp|j
D ]d\}}|dkrVtd}t|t rjt |}t
|||}|| kr| | dkrt| }|||< q<W |S )a Return type hints for an object.
This is often the same as obj.__annotations__, but it handles
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The argument may be a module, class, method, or function. The annotations
are returned as a dictionary. For classes, annotations include also
inherited members.
TypeError is raised if the argument is not of a type that can contain
annotations, and an empty dictionary is returned if no annotations are
present.
BEWARE -- the behavior of globalns and localns is counterintuitive
(unless you are familiar with how eval() and exec() work). The
search order is locals first, then globals.
- If no dict arguments are passed, an attempt is made to use the
globals from obj (or the respective module's globals for classes),
and these are also used as the locals. If the object does not appear
to have globals, an empty dictionary is used.
- If one dict argument is passed, it is used for both globals and
locals.
- If two dict arguments are passed, they specify globals and
locals, respectively.
__no_type_check__N__annotations__ __globals__z1{!r} is not a module, class, method, or function.)r rl ro reversedr r> modulesrd r getitemsrm rG ra r
ModuleType_allowed_typesrP r r! r r )
r r_ r` Zhintsr Z base_globalsZannrW r r rC rC rD r7 sV
c C s t | tr|| jj }x0| jj D ]"\}}|| j| f kr |j| q W x4|j D ](}t |tj rfd|_
t |trPt | qPW y
d| _
W n t k
r Y nX | S )aI Decorator to indicate that annotations are not type hints.
The argument must be a class or function; if it is a class, it
applies recursively to all methods and classes defined in that class
(but not to methods defined in its superclasses or subclasses).
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T)
rl ro r copyr( r r valuesr r r" r9 rP )r{ Z arg_attrsr r r rC rC rD r9 s
c s t j fdd}|S )zDecorator to give another decorator the @no_type_check effect.
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function in @no_type_check.
c s | |}t |}|S )N)r9 )r\ r] r ) decoratorrC rD wrapped_decorator/ s
z2no_type_check_decorator.<locals>.wrapped_decorator)r r )r- r. rC )r- rD r: ( s c O s t ddS )z*Helper for @overload to raise when called.zYou should not call an overloaded function. A series of @overload-decorated functions outside a stub module should always be followed by an implementation that is not @overload-ed.N)NotImplementedError)r\ r] rC rC rD _overload_dummy8 s r0 c C s t S )a
Decorator for overloaded functions/methods.
In a stub file, place two or more stub definitions for the same
function in a row, each decorated with @overload. For example:
@overload
def utf8(value: None) -> None: ...
@overload
def utf8(value: bytes) -> bytes: ...
@overload
def utf8(value: str) -> bytes: ...
In a non-stub file (i.e. a regular .py file), do the same but
follow it with an implementation. The implementation should *not*
be decorated with @overload. For example:
@overload
def utf8(value: None) -> None: ...
@overload
def utf8(value: bytes) -> bytes: ...
@overload
def utf8(value: str) -> bytes: ...
def utf8(value):
# implementation goes here
)r0 )r rC rC rD r; A s c s0 e Zd ZdZ fddZdd Zdd Z ZS )
_ProtocolMetaz~Internal metaclass for _Protocol.
This exists so _Protocol classes can be generic without deriving
from Generic.
c s" t | jkrt j|S tdd S )Nz+Protocols cannot be used with isinstance().)r r rT r rP )r[ r )rZ rC rD r e s
z _ProtocolMeta.__instancecheck__c sL | j s
tS | tkrdS | j }x(|D ] t fdd|jD s$dS q$W dS )NTc 3 s | ]} |j kV qd S )N)r )r d)r rC rD r w s z2_ProtocolMeta.__subclasscheck__.<locals>.<genexpr>F)rh r~ r _get_protocol_attrsr r )r[ rV attrsrC )r rD r j s
z _ProtocolMeta.__subclasscheck__c C s, g }x.| j D ]$}t|ddr |jdkr |j| q W t } x|D ]}x|jj D ]}x| j D ]&}||k r`||jkr`t|dd r`P q`W |jd rT|dkrT|dkrT|dkrT|dkrT|dkrT|d krT|d
krT|d krT|d krT|d
krT|dkrT|dkrT|dkrT|dkrT|dkrT|dkrT|j| qTW qBW |S )Nrh Fr r __abstractmethods__r# rj r r r rq r3 r r r r r r rd ) r r rA r r r keysrL add)r[ Zprotocol_basesr r4 r r rC rC rD r3 { s< z!_ProtocolMeta._get_protocol_attrs)rA rd r@ rg r r r3 ri rC rC )rZ rD r1 ^ s r1 c @ s e Zd ZdZf ZdZdS )r zInternal base class for protocol classes.
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(similar but more general than the one-offs in collections.abc
such as Hashable).
TN)rA rd r@ rg rq rh rC rC rC rD r s r Awaitablec @ s e Zd Zf ZdS )r8 N)rA rd r@ rq rC rC rC rD r8 s )r Coroutinec @ s e Zd Zf ZdS )r9 N)rA rd r@ rq rC rC rC rD r9 s
AsyncIterablec @ s e Zd Zf ZdS )r: N)rA rd r@ rq rC rC rC rD r: s c @ s e Zd Zf ZdS )
AsyncIteratorN)rA rd r@ rq rC rC rC rD r; s r; c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r s c @ s" e Zd Zf ZeedddZdS )r* )returnc C s d S )NrC )r[ rC rC rD __int__ s zSupportsInt.__int__N)rA rd r@ rq r intr= rC rC rC rD r* s c @ s" e Zd Zf ZeedddZdS )r) )r< c C s d S )NrC )r[ rC rC rD __float__ s zSupportsFloat.__float__N)rA rd r@ rq r floatr? rC rC rC rD r) s c @ s" e Zd Zf ZeedddZdS )r( )r< c C s d S )NrC )r[ rC rC rD __complex__ s zSupportsComplex.__complex__N)rA rd r@ rq r complexrA rC rC rC rD r( s c @ s" e Zd Zf ZeedddZdS )r' )r< c C s d S )NrC )r[ rC rC rD __bytes__ s zSupportsBytes.__bytes__N)rA rd r@ rq r bytesrC rC rC rC rD r' s c @ s" e Zd Zf ZeedddZdS )r& )r< c C s d S )NrC )r[ rC rC rD __abs__ s zSupportsAbs.__abs__N)rA rd r@ rq r r rE rC rC rC rD r& s c @ s& e Zd Zf ZedeedddZdS )r+ r )ndigitsr< c C s d S )NrC )r[ rF rC rC rD __round__ s zSupportsRound.__round__N)r )rA rd r@ rq r r> r rG rC rC rC rD r+ s c @ s e Zd Zf ZdS )r% N)rA rd r@ rq rC rC rC rD r%
s c @ s" e Zd Zf ZeddddZdS )r% zIterator[T_co])r< c C s d S )NrC )r[ rC rC rD __reversed__ s zReversible.__reversed__N)rA rd r@ rq r rH rC rC rC rD r%
s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r s
Collectionc @ s e Zd Zf ZdS )rI N)rA rd r@ rq rC rC rC rD rI s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r ' s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r + s c @ s e Zd Zf ZdS )r! N)rA rd r@ rq rC rC rC rD r! 0 s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r 6 s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r : s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r ? s c @ s e Zd Zf ZdS )r" N)rA rd r@ rq rC rC rC rD r" E s c @ s e Zd Zf ZdS )r" N)rA rd r@ rq rC rC rC rD r" I s c @ s e Zd Zf ZdS )r" N)rA rd r@ rq rC rC rC rD r" M s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r R s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r V s c @ s e Zd Zf Zdd ZdS )r0 c O s$ | j tkrtdtt| f||S )Nz4Type List cannot be instantiated; use list() instead)r r0 rP r r )rV r\ r] rC rC rD rU ^ s
z List.__new__N)rA rd r@ rq rU rC rC rC rD r0 Z s c @ s e Zd Zf Zdd ZdS )r- c O s* | j tkrtj||S ttj| f||S )N)r r- collectionsdequer )rV r\ r] rC rC rD rU i s
z
Deque.__new__N)rA rd r@ rq rU rC rC rC rD r- e s c @ s e Zd Zf Zdd ZdS )r1 c O s$ | j tkrtdtt| f||S )Nz2Type Set cannot be instantiated; use set() instead)r r1 rP r r )rV r\ r] rC rC rD rU s s
z Set.__new__N)rA rd r@ rq rU rC rC rC rD r1 o s c @ s e Zd Zf Zdd ZdS )r2 c O s$ | j tkrtdtt| f||S )Nz>Type FrozenSet cannot be instantiated; use frozenset() instead)r r2 rP r r )rV r\ r] rC rC rD rU } s
zFrozenSet.__new__N)rA rd r@ rq rU rC rC rC rD r2 z s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r s c @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r s c @ s e Zd Zf ZdS )r$ N)rA rd r@ rq rC rC rC rD r$ s AbstractContextManagerc @ s e Zd Zf ZdS )r N)rA rd r@ rq rC rC rC rD r s c @ s2 e Zd Zf Zdd Zejdd Zedd Z dS )r c C s | S )NrC )r[ rC rC rD __enter__ s zContextManager.__enter__c C s d S )NrC )r[ exc_type exc_value tracebackrC rC rD __exit__ s zContextManager.__exit__c C s8 | t kr4tdd |jD r4tdd |jD r4dS tS )Nc s s | ]}d |j kV qdS )rM N)r )r BrC rC rD r s z2ContextManager.__subclasshook__.<locals>.<genexpr>c s s | ]}d |j kV qdS )rQ N)r )r rR rC rC rD r s T)r r r r~ )rV CrC rC rD r s
z ContextManager.__subclasshook__N)
rA rd r@ rq rM r r rQ classmethodr rC rC rC rD r s AbstractAsyncContextManagerc @ s e Zd Zf ZdS )AsyncContextManagerN)rA rd r@ rq rC rC rC rD rV s rV a
class AsyncContextManager(Generic[T_co]):
__slots__ = ()
async def __aenter__(self):
return self
@abc.abstractmethod
async def __aexit__(self, exc_type, exc_value, traceback):
return None
@classmethod
def __subclasshook__(cls, C):
if cls is AsyncContextManager:
if sys.version_info[:2] >= (3, 6):
return _collections_abc._check_methods(C, "__aenter__", "__aexit__")
if (any("__aenter__" in B.__dict__ for B in C.__mro__) and
any("__aexit__" in B.__dict__ for B in C.__mro__)):
return True
return NotImplemented
__all__.append('AsyncContextManager')
c @ s e Zd Zf Zdd ZdS )r. c O s$ | j tkrtdtt| f||S )Nz4Type Dict cannot be instantiated; use dict() instead)r r. rP r r )rV r\ r] rC rC rD rU s
z Dict.__new__N)rA rd r@ rq rU rC rC rC rD r. s c @ s e Zd Zf Zdd ZdS )r/ c O s* | j tkrtj||S ttj| f||S )N)r r/ rJ defaultdictr )rV r\ r] rC rC rD rU s
zDefaultDict.__new__N)rA rd r@ rq rU rC rC rC rD r/ s c @ s e Zd Zf Zdd ZdS )r, c O s* | j tkrtj||S ttj| f||S )N)r r, rJ r )rV r\ r] rC rC rD rU s
zCounter.__new__N)rA rd r@ rq rU rC rC rC rD r, s ChainMapc @ s e Zd Zf Zdd ZdS )rY c O s* | j tkrtj||S ttj| f||S )N)r rY rJ r )rV r\ r] rC rC rD rU s
zChainMap.__new__N)rA rd r@ rq rU rC rC rC rD rY s c @ s e Zd Zf Zdd ZdS )r4 c O s$ | j tkrtdtt| f||S )Nz@Type Generator cannot be instantiated; create a subclass instead)r r4 rP r _G_base)rV r\ r] rC rC rD rU s
zGenerator.__new__N)rA rd r@ rq rU rC rC rC rD r4 s AsyncGeneratorc @ s e Zd Zf ZdS )r[ N)rA rd r@ rq rC rC rC rD r[ s CT_co)r r c @ s e Zd ZdZf ZdS )r a A special construct usable to annotate class objects.
For example, suppose we have the following classes::
class User: ... # Abstract base for User classes
class BasicUser(User): ...
class ProUser(User): ...
class TeamUser(User): ...
And a function that takes a class argument that's a subclass of
User and returns an instance of the corresponding class::
U = TypeVar('U', bound=User)
def new_user(user_class: Type[U]) -> U:
user = user_class()
# (Here we could write the user object to a database)
return user
joe = new_user(BasicUser)
At this point the type checker knows that joe has type BasicUser.
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zNamedTupleMeta.__new__)rA rd r@ rU ri rC rC )rZ rD rl W s rl c @ s e Zd ZdZdZdddZdS )r3 a4 Typed version of namedtuple.
Usage in Python versions >= 3.6::
class Employee(NamedTuple):
name: str
id: int
This is equivalent to::
Employee = collections.namedtuple('Employee', ['name', 'id'])
The resulting class has extra __annotations__ and _field_types
attributes, giving an ordered dict mapping field names to types.
__annotations__ should be preferred, while _field_types
is kept to maintain pre PEP 526 compatibility. (The field names
are in the _fields attribute, which is part of the namedtuple
API.) Alternative equivalent keyword syntax is also accepted::
Employee = NamedTuple('Employee', name=str, id=int)
In Python versions <= 3.5 use::
Employee = NamedTuple('Employee', [('name', str), ('id', int)])
TNc K s: |rt rtd|d kr$|j }n |r0tdt||S )Nz>Keyword syntax for NamedTuple is only supported in Python 3.6+zIEither list of fields or keywords can be provided to NamedTuple, not both)rn rP r( rd )r[ rr ZfieldskwargsrC rC rD rU s
zNamedTuple.__new__)N)rA rd r@ rg rO rU rC rC rC rD r3 y s c C s dd }| |_ ||_|S )a% NewType creates simple unique types with almost zero
runtime overhead. NewType(name, tp) is considered a subtype of tp
by static type checkers. At runtime, NewType(name, tp) returns
a dummy function that simply returns its argument. Usage::
UserId = NewType('UserId', int)
def name_by_id(user_id: UserId) -> str:
...
UserId('user') # Fails type check
name_by_id(42) # Fails type check
name_by_id(UserId(42)) # OK
num = UserId(5) + 1 # type: int
c S s | S )NrC )rB rC rC rD new_type s zNewType.<locals>.new_type)rA Z
__supertype__)rW r rv rC rC rD r8 s Fc @ s e Zd ZdZf ZeedddZeedddZe dddd Z
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d+d,d-Z e ee dd.d/d0Z e d1dd2d3Z e ddd4d5Z dS )>IOa Generic base class for TextIO and BinaryIO.
This is an abstract, generic version of the return of open().
NOTE: This does not distinguish between the different possible
classes (text vs. binary, read vs. write vs. read/write,
append-only, unbuffered). The TextIO and BinaryIO subclasses
below capture the distinctions between text vs. binary, which is
pervasive in the interface; however we currently do not offer a
way to track the other distinctions in the type system.
)r< c C s d S )NrC )r[ rC rC rD mode s zIO.modec C s d S )NrC )r[ rC rC rD rW s zIO.nameNc C s d S )NrC )r[ rC rC rD close s zIO.closec C s d S )NrC )r[ rC rC rD closed s z IO.closedc C s d S )NrC )r[ rC rC rD fileno s z IO.filenoc C s d S )NrC )r[ rC rC rD flush s zIO.flushc C s d S )NrC )r[ rC rC rD isatty s z IO.isattyrK )r] r< c C s d S )NrC )r[ r] rC rC rD read s zIO.readc C s d S )NrC )r[ rC rC rD readable s z IO.readable)limitr< c C s d S )NrC )r[ r rC rC rD readline s z IO.readline)hintr< c C s d S )NrC )r[ r rC rC rD readlines s z IO.readlinesr )offsetwhencer< c C s d S )NrC )r[ r r rC rC rD seek s zIO.seekc C s d S )NrC )r[ rC rC rD seekable s z IO.seekablec C s d S )NrC )r[ rC rC rD tell s zIO.tell)sizer< c C s d S )NrC )r[ r rC rC rD truncate s z IO.truncatec C s d S )NrC )r[ rC rC rD writable s z IO.writable)sr< c C s d S )NrC )r[ r rC rC rD write s zIO.write)linesr< c C s d S )NrC )r[ r rC rC rD
writelines s z
IO.writelinesz
IO[AnyStr]c C s d S )NrC )r[ rC rC rD rM s z IO.__enter__c C s d S )NrC )r[ ro r rP rC rC rD rQ s z IO.__exit__r )r r )r r )r )r )N) rA rd r@ rg rq r rm rx rW r ry r rz r> r{ r| r} r5 r~ r r r0 r r r r r r r r rM rQ rC rC rC rD rw sT rw c @ sB e Zd ZdZf Zeeeef e dddZ
ed dddZ dS ) BinaryIOz5Typed version of the return of open() in binary mode.)r r< c C s d S )NrC )r[ r rC rC rD r ) s zBinaryIO.write)r< c C s d S )NrC )r[ rC rC rD rM - s zBinaryIO.__enter__N) rA rd r@ rg rq r r rD bytearrayr> r rM rC rC rC rD r $ s r c @ s e Zd ZdZf ZeedddZeedddZ ee
e dddZ ee dd d
Z
eedd d Zed dd
dZdS )TextIOz3Typed version of the return of open() in text mode.)r< c C s d S )NrC )r[ rC rC rD buffer7 s z
TextIO.bufferc C s d S )NrC )r[ rC rC rD encoding; s zTextIO.encodingc C s d S )NrC )r[ rC rC rD errors? s z
TextIO.errorsc C s d S )NrC )r[ rC rC rD line_bufferingC s zTextIO.line_bufferingc C s d S )NrC )r[ rC rC rD newlinesG s zTextIO.newlinesc C s d S )NrC )r[ rC rC rD rM K s zTextIO.__enter__N)rA rd r@ rg rq r r r rm r r r r r r
r r rM rC rC rC rD r 2 s r c @ s& e Zd ZdZdddgZeZeZeZdS )ioz)Wrapper namespace for IO generic classes.rw r r N)rA rd r@ rg __all__rw r r rC rC rC rD r P s
r z.ioPatternr c C s | j S )N)pattern)r rC rC rD <lambda>^ s r Matchc C s | j jS )N)rer )mrC rC rD r ` s c @ s e Zd ZdZddgZeZeZdS )r z&Wrapper namespace for re type aliases.r r N)rA rd r@ rg r r r rC rC rC rD r c s r z.re)r r )NN)NN)r rW )r r ) rU r^ rq re rf rg rb rh ri rj rk )rd rA r@ r# )r r r rJ
contextlibr r Z stdlib_rer> r collections.abcZcollections_abc ImportErrorr? _collections_abcr r r ro r r^ __str__rm rQ r rE rM rN rH rI rG rF rc r ra r} rS r r
r ZNoReturnr r r r r r r r rD r5 r r r r r r r r r r r r r r r r
r r r r
rn r r r r r r6 r! r BuiltinFunctionType
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