fixed cyclic import (Draegerwerk#334)

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CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - fixed a bug where sending and receiving socket are used after they have been closed already [#328](https://github.com/Draegerwerk/sdc11073/issues/328)
 - fixed a bug where `getsockname()` is called before the socket is binded
+- fixed cyclic import [#333](https://github.com/Draegerwerk/sdc11073/issues/333)
 
 ## [2.0.0rc1] - 2024-01-31
 

src/sdc11073/provider/providerimpl.py

@@ -27,7 +27,6 @@
 from sdc11073.xml_types.wsd_types import ProbeMatchesType, ProbeMatchType
 from sdc11073.roles.protocols import ProductProtocol, WaveformProviderProtocol # import here for code cov. :(
 
-from .components import default_sdc_provider_components
 from .periodicreports import PeriodicReportsHandler, PeriodicReportsNullHandler
 
 if TYPE_CHECKING:
@@ -126,6 +125,7 @@ def __init__(self, ws_discovery: WsDiscoveryProtocol,
         self._socket_timeout = socket_timeout or int(max_subscription_duration * 1.2)
         self._log_prefix = log_prefix
         if default_components is None:
+            from .components import default_sdc_provider_components  # lazy import avoids cyclic import
             default_components = default_sdc_provider_components
         self._components = copy.deepcopy(default_components)
         if specific_components is not None: