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TYPE_CHECKINGc C s" t jd d dkr| jS | jS d S )Nr r )r r )sys version_info __qualname____name__)x rC /usr/lib64/python3.6/typing.py _qualnameg s rE c C s& d}| j dr"| |kr"| dd } | S )N
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TypingMetaa Metaclass for most types defined in typing module
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typing classes. Any legitimate class defined using a metaclass
derived from TypingMeta must pass _root=True.
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Zdd Z ZS )rI zInternal mix-in class to prevent instantiation.
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rW type_var impl_type type_checkerc C s || _ || _|| _|| _dS )at Initializer.
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name: The name, e.g. 'Pattern'.
type_var: The type parameter, e.g. AnyStr, or the
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impl_type: The implementation type.
type_checker: Function that takes an impl_type instance.
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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
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At runtime, isinstance(x, T) and issubclass(C, T) will raise TypeError.
Type variables defined with covariant=True or contravariant=True
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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
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A.__constraints__ == (str, bytes)
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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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keyword arguments that are used for internal bookkeeping, therefore
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Nz!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 z&GenericMeta.__new__..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 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
_abc_registry
_abc_cacher r@ r r r r )rV rW rX rY rb r\ r extra
orig_basesZgvarsbaseZtvarsetZ
initial_basesr[ )rZ )r rD rU sj
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..)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
fkrt |}|}nH| t kr|}|}n6| j
tt fkrtdt| nt| | t |}|}| j
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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__..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
allrk 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 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__..) 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.
Example: Tuple[T1, T2] is a tuple of two elements corresponding
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__..)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.
This returns the value unchanged. To the type checker this
signals that the return value has the designated type, but at
runtime we intentionally don't check anything (we want this
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| }x&t||d |D ]\}} | ||< qxW |S )z:Internal helper to extract the default arguments, by name.N) __code__r
co_argcount co_varnames __defaults____kwdefaults__r rk zip)
r r| Z pos_countZ arg_namesdefaultsZ
kwdefaultsr Z
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|||}|||< qbW q*W |S |dkrt| tjr| j}n t | di }|dkr|}n |dkr|}t | dd}|dkr"t| tri S tdj| t| } t|}xp|j
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|||}|| kr| | dkrt| }|||< q modulesrd r getitemsrm rG ra r
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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).
This mutates the function(s) or class(es) in place.
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.
This wraps the decorator with something that wraps the decorated
function in @no_type_check.
c s | |}t |}|S )N)r9 )r\ r] r ) decoratorrC rD wrapped_decorator/ s
z2no_type_check_decorator..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 r/ 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
)r/ )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__..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 r2 r r r r r r rd ) r r rA r r r keysrL add)r[ Zprotocol_basesr r3 r r rC rC rD r2 { s< z!_ProtocolMeta._get_protocol_attrs)rA rd r@ rg r r r2 ri rC rC )rZ rD r0 ^ s r0 c @ s e Zd ZdZf ZdZdS )r zInternal base class for protocol classes.
This implements a simple-minded structural issubclass check
(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 )r7 N)rA rd r@ rq rC rC rC rD r7 s )r Coroutinec @ s e Zd Zf ZdS )r8 N)rA rd r@ rq rC rC rC rD r8 s
AsyncIterablec @ s e Zd Zf ZdS )r9 N)rA rd r@ rq rC rC rC rD r9 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 complexr@ 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 bytesrB 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 rD rC rC rC rD r& s c @ s& e Zd Zf ZedeedddZdS )r+ r )ndigitsr; c C s d S )NrC )r[ rE rC rC rD __round__ s zSupportsRound.__round__N)r )rA rd r@ rq r r= r rF 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 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
Collectionc @ s e Zd Zf ZdS )rH N)rA rd r@ rq rC rC rC rD rH 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 )rL N)r )r BrC rC rD r s z2ContextManager.__subclasshook__..c s s | ]}d |j kV qdS )rP N)r )r rQ rC rC rD r s T)r r r r~ )rV CrC rC rD r s
z ContextManager.__subclasshook__N)
rA rd r@ rq rL r r rP classmethodr rC rC rC rD r s AbstractAsyncContextManagerc @ s e Zd Zf ZdS )AsyncContextManagerN)rA rd r@ rq rC rC rC rD rU s rU 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/ rI 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, rI 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 )rX c O s* | j tkrtj||S ttj| f||S )N)r rX rI r )rV r\ r] rC rC rD rU s
zChainMap.__new__N)rA rd r@ rq rU rC rC rC rD rX 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 )rZ N)rA rd r@ rq rC rC rC rD rZ s CT_co)r r c @ s e Zd ZdZf ZdS )r a A special construct usable to annotate class objects.
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class User: ... # Abstract base for User classes
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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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is kept to maintain pre PEP 526 compatibility. (The field names
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Employee = NamedTuple('Employee', name=str, id=int)
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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
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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
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)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
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IO[AnyStr]c C s d S )NrC )r[ rC rC rD rL s z IO.__enter__c C s d S )NrC )r[ ro r rO rC rC rD rP s z IO.__exit__r )r r )r r )r )r )N) rA rd r@ rg rq r rm rw rW r rx r ry r= rz r{ r| r5 r} r~ r r0 r r r r r r r r rL rP rC rC rC rD rv sT rv 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 rL - s zBinaryIO.__enter__N) rA rd r@ rg rq r r rC bytearrayr= r rL rC rC rC rD r $ s r c @ s e Zd ZdZf ZeedddZeedddZ ee
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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 rL K s zTextIO.__enter__N)rA rd r@ rg rq r r r rm r r r r r r
r r rL rC rC rC rD r 2 s r c @ s& e Zd ZdZdddgZeZeZeZdS )ioz)Wrapper namespace for IO generic classes.rv r r N)rA rd r@ rg __all__rv r r rC rC rC rD r P s
r z.ioPatternr c C s | j S )N)pattern)r rC rC rD ^ 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 rV )r r ) rU r^ rq rd re rf ra rg rh ri rj )rd rA r@ r" )r r r rI
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