本文整理汇总了Python中typing.TYPE_CHECKING属性的典型用法代码示例。如果您正苦于以下问题：Python typing.TYPE_CHECKING属性的具体用法？Python typing.TYPE_CHECKING怎么用？Python typing.TYPE_CHECKING使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在模块typing的用法示例。

在下文中一共展示了typing.TYPE_CHECKING属性的30个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Python代码示例。

示例1: get_database

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def get_database(request: web.Request) -> web.Response:

instance_id = request.match_info.get("id", "")

instance = PluginInstance.get(instance_id, None)

if not instance:

return resp.instance_not_found

elif not instance.inst_db:

return resp.plugin_has_no_database

if TYPE_CHECKING:

table: Table

column: Column

return web.json_response({

table.name: {

"columns": {

column.name: {

"type": str(column.type),

"unique": column.unique or False,

"default": column.default,

"nullable": column.nullable,

"primary": column.primary_key,

"autoincrement": column.autoincrement,

} for column in table.columns

},

} for table in instance.get_db_tables().values()

})

开发者ID:maubot，项目名称:maubot，代码行数:26，

示例2: test_mypy_compliance

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def test_mypy_compliance():

class EvenType:

def __init__(self, num):

assert num % 2 is 0

self.num = num

if typing.TYPE_CHECKING:

EvenDagsterType = EvenType

else:

EvenDagsterType = PythonObjectDagsterType(EvenType)

@solid

def double_even(_, even_num: EvenDagsterType) -> EvenDagsterType:

return EvenType(even_num.num * 2)

assert execute_solid(double_even, input_values={'even_num': EvenType(2)}).success

开发者ID:dagster-io，项目名称:dagster，代码行数:18，

示例3: demo

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo() -> None:

NOT_BOOK_JSON = """

{"title": "Andromeda Strain",

"flavor": "pistachio",

"authors": true}

"""

not_book = from_json(NOT_BOOK_JSON) # <1>

if TYPE_CHECKING: # <2>

reveal_type(not_book)

reveal_type(not_book['authors'])

print(not_book) # <3>

print(not_book['flavor']) # <4>

xml = to_xml(not_book) # <5>

print(xml) # <6>

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:18，

示例4: demo

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo() -> None:

import typing

p1 = tuple(range(10))

s1 = sample(p1, 3)

if typing.TYPE_CHECKING:

reveal_type(p1)

reveal_type(s1)

print(p1)

print(s1)

p2 = 'The quick brown fox jumps over the lazy dog'

s2 = sample(p2, 10)

if typing.TYPE_CHECKING:

reveal_type(p2)

reveal_type(s2)

print(p2)

print(s2)

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:18，

示例5: ignore_type_check_filter

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def ignore_type_check_filter(node: nc.NodeNG) -> nc.NodeNG:

"""Ignore stuff under 'if TYPE_CHECKING:' block at module level."""

# Look for a non-nested 'if TYPE_CHECKING:'

if (isinstance(node.test, astroid.Name)

and node.test.name == 'TYPE_CHECKING'

and isinstance(node.parent, astroid.Module)):

# Find the module node.

mnode = node

while mnode.parent is not None:

mnode = mnode.parent

# First off, remove any names that are getting defined

# in this block from the module locals.

for cnode in node.body:

_strip_import(cnode, mnode)

# Now replace the body with a simple 'pass'. This will

# keep pylint from complaining about grouped imports/etc.

passnode = astroid.Pass(parent=node,

lineno=node.lineno + 1,

col_offset=node.col_offset + 1)

node.body = [passnode]

return node

开发者ID:efroemling，项目名称:ballistica，代码行数:27，

示例6: _setup_player_and_team_types

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def _setup_player_and_team_types(self) -> None:

"""Pull player and team types from our typing.Generic params."""

# TODO: There are proper calls for pulling these in Python 3.8;

# should update this code when we adopt that.

# NOTE: If we get Any as PlayerType or TeamType (generally due

# to no generic params being passed) we automatically use the

# base class types, but also warn the user since this will mean

# less type safety for that class. (its better to pass the base

# player/team types explicitly vs. having them be Any)

if not TYPE_CHECKING:

self._playertype = type(self).__orig_bases__[-1].__args__[0]

if not isinstance(self._playertype, type):

self._playertype = Player

print(f'ERROR: {type(self)} was not passed a Player'

f' type argument; please explicitly pass ba.Player'

f' if you do not want to override it.')

self._teamtype = type(self).__orig_bases__[-1].__args__[1]

if not isinstance(self._teamtype, type):

self._teamtype = Team

print(f'ERROR: {type(self)} was not passed a Team'

f' type argument; please explicitly pass ba.Team'

f' if you do not want to override it.')

assert issubclass(self._playertype, Player)

assert issubclass(self._teamtype, Team)

开发者ID:efroemling，项目名称:ballistica，代码行数:27，

示例7: test_type_hint_comments

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def test_type_hint_comments(v):

v.scan(

"""\

import typing

if typing.TYPE_CHECKING:

from typing import List, Text

def foo(foo_li):

# type: (List[Text]) -> None

for bar in foo_li:

bar.xyz()

"""

)

check(v.unused_imports, ["List", "Text"])

开发者ID:jendrikseipp，项目名称:vulture，代码行数:18，

示例8: _parent

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def _parent(self) -> typing.Optional['WebKitElement']:

"""Get the parent element of this element."""

self._check_vanished()

elem = typing.cast(typing.Optional[QWebElement],

self._elem.parent())

if elem is None or elem.isNull():

return None

if typing.TYPE_CHECKING:

# pylint: disable=used-before-assignment

assert isinstance(self._tab, webkittab.WebKitTab)

return WebKitElement(elem, tab=self._tab)

开发者ID:qutebrowser，项目名称:qutebrowser，代码行数:15，

示例9: setup

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def setup(app):

typing.TYPE_CHECKING = True

app.add_stylesheet("instaloader.css")

app.connect('autodoc-process-signature', sphinx_autodoc_typehints.process_signature)

app.connect('autodoc-process-docstring', sphinx_autodoc_typehints.process_docstring)

开发者ID:instaloader，项目名称:instaloader，代码行数:7，

示例10: load

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def load(self) -> "Porcupine":

"""Load Porcupine object."""

dist = importlib_metadata.distribution("pvporcupine")

porcupine_paths = [

f

for f in cast(List[importlib_metadata.PackagePath], dist.files)

if f.name == "porcupine.py"

]

if not porcupine_paths:

raise RuntimeError("Unable to find porcupine.py in pvporcupine package")

porcupine_path = porcupine_paths[0].locate().parent

lib_path = porcupine_path.parent.parent

sys.path.append(str(porcupine_path))

if not TYPE_CHECKING:

# pylint: disable=import-outside-toplevel, import-error

from porcupine import Porcupine

return Porcupine(

library_path=str(self._library_path(lib_path)),

model_file_path=str(self._model_file_path(lib_path)),

keyword_file_path=str(self._keyword_file_path(lib_path)),

sensitivity=0.5,

)

开发者ID:home-assistant，项目名称:ada，代码行数:29，

示例11: add_context

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def add_context(self, ctx: IRTLSContext) -> None:

if TYPE_CHECKING:

# This is needed because otherwise self.__setitem__ confuses things.

handler: Callable[[str, str], None]

if ctx.is_fallback:

self.is_fallback = True

for secretinfokey, handler, hkey in [

( 'cert_chain_file', self.update_cert_zero, 'certificate_chain' ),

( 'private_key_file', self.update_cert_zero, 'private_key' ),

( 'cacert_chain_file', self.update_validation, 'trusted_ca' ),

]:

if secretinfokey in ctx['secret_info']:

handler(hkey, ctx['secret_info'][secretinfokey])

for ctxkey, handler, hkey in [

( 'alpn_protocols', self.update_alpn, 'alpn_protocols' ),

( 'cert_required', self.__setitem__, 'require_client_certificate' ),

( 'min_tls_version', self.update_tls_version, 'tls_minimum_protocol_version' ),

( 'max_tls_version', self.update_tls_version, 'tls_maximum_protocol_version' ),

( 'sni', self.__setitem__, 'sni' ),

]:

value = ctx.get(ctxkey, None)

if value is not None:

handler(hkey, value)

# This is a separate loop because self.update_tls_cipher is not the same type

# as the other updaters: it takes a list of strings for the value, not a single

# string. Getting mypy to be happy with that is _annoying_.

for ctxkey, list_handler, hkey in [

( 'cipher_suites', self.update_tls_cipher, 'cipher_suites' ),

( 'ecdh_curves', self.update_tls_cipher, 'ecdh_curves' ),

]:

value = ctx.get(ctxkey, None)

if value is not None:

list_handler(hkey, value)

开发者ID:datawire，项目名称:ambassador，代码行数:42，

示例12: from_resource

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def from_resource(cls: Type[R], other: R,

rkey: Optional[str]=None,

location: Optional[str]=None,

kind: Optional[str]=None,

serialization: Optional[str]=None,

name: Optional[str]=None,

namespace: Optional[str]=None,

metadata_labels: Optional[str] = None,

apiVersion: Optional[str]=None,

**kwargs) -> R:

new_name = name or other.name

new_apiVersion = apiVersion or other.apiVersion

new_namespace = namespace or other.namespace

new_metadata_labels = metadata_labels or other.get('metadata_labels', None)

# mypy 0.730 is Just Flat Wrong here. It tries to be "more strict" about

# super(), which is fine, but it also flags this particular super() call

# as an error, even though Type[R] is necessarily a Resource type.

#

# Since it's complaining about "argument 2 for super is not an instance

# of argument 1", we need to assert() isinstance here -- but of course,

# cls is _not_ an instance at all, it's a class, so isinstance() will

# fail at runtime. So we only do the assertion if TYPE_CHECKING. Grrrr.

if TYPE_CHECKING:

assert(isinstance(cls, Resource))

return super().from_resource(other, rkey=rkey, location=location, kind=kind,

name=new_name, apiVersion=new_apiVersion, namespace=new_namespace,

metadata_labels=new_metadata_labels, serialization=serialization, **kwargs)

# ACResource.INTERNAL is the magic ACResource we use to represent something created by

# Ambassador's internals.

开发者ID:datawire，项目名称:ambassador，代码行数:34，

示例13: test_idomiatic_typing_guards

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def test_idomiatic_typing_guards(self):

# typing.TYPE_CHECKING: python3.5.3+

self.flakes("""

from typing import TYPE_CHECKING

if TYPE_CHECKING:

from t import T

def f(): # type: () -> T

pass

""")

# False: the old, more-compatible approach

self.flakes("""

if False:

from t import T

def f(): # type: () -> T

pass

""")

# some choose to assign a constant and do it that way

self.flakes("""

MYPY = False

if MYPY:

from t import T

def f(): # type: () -> T

pass

""")

开发者ID:PyCQA，项目名称:pyflakes，代码行数:31，

示例14: test_typing_guard_for_protocol

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def test_typing_guard_for_protocol(self):

self.flakes("""

from typing import TYPE_CHECKING

if TYPE_CHECKING:

from typing import Protocol

else:

Protocol = object

class C(Protocol):

def f(): # type: () -> int

pass

""")

开发者ID:PyCQA，项目名称:pyflakes，代码行数:15，

示例15: __init__

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def __init__(self, **data):

if "pk" in data:

data[self.Mapping.pk_name] = data.pop("pk")

if typing.TYPE_CHECKING:

self.__values__: Dict[str, Any] = {}

self.__fields_set__: "SetStr" = set()

pk_only = data.pop("__pk_only__", False)

values, fields_set, _ = pydantic.validate_model(

self, data, raise_exc=not pk_only

)

object.__setattr__(self, "__values__", values)

object.__setattr__(self, "__fields_set__", fields_set)

开发者ID:awesometoolbox，项目名称:ormantic，代码行数:17，

示例16: demo

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo() -> None: # <1>

book = BookDict( # <2>

isbn='0134757599',

title='Refactoring, 2e',

authors=['Martin Fowler', 'Kent Beck'],

pagecount=478

)

authors = book['authors'] # <3>

if TYPE_CHECKING: # <4>

reveal_type(authors) # <5>

authors = 'Bob' # <6>

book['weight'] = 4.2

del book['title']

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:15，

示例17: demo

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo() -> None:

import typing

pop = [1, 1, 2, 3, 3, 3, 3, 4]

m = mode(pop)

if typing.TYPE_CHECKING:

reveal_type(pop)

reveal_type(m)

print(pop)

print(repr(m), type(m))

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:11，

示例18: demo

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo() -> None:

import typing

pop = 'abracadabra'

m = mode(pop)

if typing.TYPE_CHECKING:

reveal_type(pop)

reveal_type(m)

print(pop)

print(m.upper(), type(m))

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:12，

示例19: demo

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo() -> None:

import typing

pop = 'abracadabra'

m = mode(pop)

if typing.TYPE_CHECKING:

reveal_type(pop)

reveal_type(m)

print(pop)

print(m.upper(), type(m))

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:11，

示例20: demo

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo() -> None:

from typing import List, Set, TYPE_CHECKING

pop = [Fraction(1, 2), Fraction(1, 3), Fraction(1, 4), Fraction(1, 2)]

m = mode(pop)

if TYPE_CHECKING:

reveal_type(pop)

reveal_type(m)

print(pop)

print(repr(m), type(m))

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:11，

示例21: test_top_tuples

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def test_top_tuples() -> None:

fruit = 'mango pear apple kiwi banana'.split()

series: Iterator[Tuple[int, str]] = (

(len(s), s) for s in fruit)

length = 3

expected = [(6, 'banana'), (5, 'mango'), (5, 'apple')]

result = top(series, length)

if TYPE_CHECKING:

reveal_type(series)

reveal_type(expected)

reveal_type(result)

assert result == expected

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:14，

示例22: test_top_objects_error

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def test_top_objects_error() -> None:

series = [object() for _ in range(4)]

if TYPE_CHECKING:

reveal_type(series)

with pytest.raises(TypeError) as exc:

top(series, 3)

assert "'

# end::TOP_TEST[]

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:10，

示例23: demo_args_list_float

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo_args_list_float() -> None:

args = [2.5, 3.5, 1.5]

expected = 3.5

result = my.max(*args)

print(args, expected, result, sep='\n')

assert result == expected

if TYPE_CHECKING:

reveal_type(args)

reveal_type(expected)

reveal_type(result)

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:12，

示例24: demo_args_iter_str

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo_args_iter_str() -> None:

args = iter('banana kiwi mango apple'.split())

expected = 'mango'

result = my.max(args)

print(args, expected, result, sep='\n')

assert result == expected

if TYPE_CHECKING:

reveal_type(args)

reveal_type(expected)

reveal_type(result)

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:12，

示例25: demo_args_iter_not_comparable_with_key

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo_args_iter_not_comparable_with_key() -> None:

args = [object(), object(), object()]

key = id

expected = max(args, key=id)

result = my.max(args, key=key)

print(args, key, expected, result, sep='\n')

assert result == expected

if TYPE_CHECKING:

reveal_type(args)

reveal_type(key)

reveal_type(expected)

reveal_type(result)

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:14，

示例26: demo_empty_iterable_with_default

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo_empty_iterable_with_default() -> None:

args: List[float] = []

default = None

expected = None

result = my.max(args, default=default)

print(args, default, expected, result, sep='\n')

assert result == expected

if TYPE_CHECKING:

reveal_type(args)

reveal_type(default)

reveal_type(expected)

reveal_type(result)

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:14，

示例27: demo_different_key_return_type

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo_different_key_return_type() -> None:

args = iter('banana kiwi mango apple'.split())

key = len

expected = 'banana'

result = my.max(args, key=key)

print(args, key, expected, result, sep='\n')

assert result == expected

if TYPE_CHECKING:

reveal_type(args)

reveal_type(key)

reveal_type(expected)

reveal_type(result)

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:14，

示例28: demo_different_key_none

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def demo_different_key_none() -> None:

args = iter('banana kiwi mango apple'.split())

key = None

expected = 'mango'

result = my.max(args, key=key)

print(args, key, expected, result, sep='\n')

assert result == expected

if TYPE_CHECKING:

reveal_type(args)

reveal_type(key)

reveal_type(expected)

reveal_type(result)

###################################### intentional type errors

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:16，

示例29: test_double_str

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def test_double_str() -> None:

given = 'A'

result = double(given)

assert result == given * 2

if TYPE_CHECKING:

reveal_type(given)

reveal_type(result)

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:9，

示例30: test_double_fraction

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# 需要导入模块: import typing [as 别名]

# 或者: from typing import TYPE_CHECKING [as 别名]

def test_double_fraction() -> None:

from fractions import Fraction

given = Fraction(2, 5)

result = double(given)

assert result == given * 2

if TYPE_CHECKING:

reveal_type(given)

reveal_type(result)

开发者ID:fluentpython，项目名称:example-code-2e，代码行数:10，

注：本文中的typing.TYPE_CHECKING属性示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。