PYTHON-6020 Move _have_dnspython into uri_parser_shared.py

pymongo/asynchronous/srv_resolver.py

@@ -29,15 +29,6 @@
 _IS_SYNC = False
 
 
-def _have_dnspython() -> bool:
-    try:
-        import dns  # noqa: F401
-
-        return True
-    except ImportError:
-        return False
-
-
 # dnspython can return bytes or str from various parts
 # of its API depending on version. We always want str.
 def maybe_decode(text: Union[str, bytes]) -> str:

pymongo/synchronous/srv_resolver.py

@@ -29,15 +29,6 @@
 _IS_SYNC = True
 
 
-def _have_dnspython() -> bool:
-    try:
-        import dns  # noqa: F401
-
-        return True
-    except ImportError:
-        return False
-
-
 # dnspython can return bytes or str from various parts
 # of its API depending on version. We always want str.
 def maybe_decode(text: Union[str, bytes]) -> str:

pymongo/uri_parser_shared.py

@@ -33,7 +33,6 @@
 )
 from urllib.parse import unquote_plus
 
-from pymongo.asynchronous.srv_resolver import _have_dnspython
 from pymongo.client_options import _parse_ssl_options
 from pymongo.common import (
     INTERNAL_URI_OPTION_NAME_MAP,
@@ -47,6 +46,16 @@
 if TYPE_CHECKING:
     from pymongo.pyopenssl_context import SSLContext
 
+
+def _have_dnspython() -> bool:
+    try:
+        import dns  # noqa: F401
+
+        return True
+    except ImportError:
+        return False
+
+
 SCHEME = "mongodb://"
 SCHEME_LEN = len(SCHEME)
 SRV_SCHEME = "mongodb+srv://"

test/asynchronous/test_srv_polling.py

@@ -27,8 +27,8 @@
 
 import pymongo
 from pymongo import common
-from pymongo.asynchronous.srv_resolver import _have_dnspython
 from pymongo.errors import ConfigurationError
+from pymongo.uri_parser_shared import _have_dnspython
 from test.asynchronous import AsyncPyMongoTestCase, client_knobs, unittest
 from test.asynchronous.utils import async_wait_until
 

test/test_srv_polling.py

@@ -28,7 +28,7 @@
 import pymongo
 from pymongo import common
 from pymongo.errors import ConfigurationError
-from pymongo.synchronous.srv_resolver import _have_dnspython
+from pymongo.uri_parser_shared import _have_dnspython
 from test import PyMongoTestCase, client_knobs, unittest
 from test.utils import wait_until