use relative import of pybind extension

evalhyd/evald.py

 from typing import List, Dict
 from numpy import dtype
 from numpy.typing import NDArray
-import evalhyd.core
+
+from ._evalhyd import _evald
 
 
 def evald(q_obs: NDArray[dtype('float64')],
@@ -15,6 +16,7 @@ def evald(q_obs: NDArray[dtype('float64')],
           bootstrap: Dict[str, int] = None,
           dts: List[str] = None) -> List[NDArray[dtype('float64')]]:
     """Function to evaluate determinist streamflow predictions"""
+
     # required arguments
     kwargs = {
         # convect 1D array into 2D array view
@@ -39,4 +41,4 @@ def evald(q_obs: NDArray[dtype('float64')],
     if dts is not None:
         kwargs['dts'] = dts
 
-    return evalhyd.core._evald(**kwargs)
+    return _evald(**kwargs)

evalhyd/evalp.py

 from typing import List, Dict
 from numpy import dtype
 from numpy.typing import NDArray
-import evalhyd.core
+
+from ._evalhyd import _evalp
 
 
 def evalp(q_obs: NDArray[dtype('float64')],
@@ -13,6 +14,7 @@ def evalp(q_obs: NDArray[dtype('float64')],
           bootstrap: Dict[str, int] = None,
           dts: List[str] = None) -> List[NDArray[dtype('float64')]]:
     """Function to evaluate probabilist streamflow predictions"""
+
     # required arguments
     kwargs = {
         'q_obs': q_obs,
@@ -32,4 +34,4 @@ def evalp(q_obs: NDArray[dtype('float64')],
     if dts is not None:
         kwargs['dts'] = dts
 
-    return evalhyd.core._evalp(**kwargs)
+    return _evalp(**kwargs)

evalhyd/src/core.cpp → evalhyd/src/evalhyd.cpp

@@ -72,7 +72,7 @@ auto evalp(
 }
 
 // Python Module and Docstrings
-PYBIND11_MODULE(core, m)
+PYBIND11_MODULE(_evalhyd, m)
 {
     xt::import_numpy();
 

setup.py

@@ -61,8 +61,8 @@ for dep, version, url in deps:
 # configure Python extension
 ext_modules = [
     Pybind11Extension(
-        "evalhyd.core",
-        ['evalhyd/src/core.cpp'],
+        "evalhyd._evalhyd",
+        ['evalhyd/src/evalhyd.cpp'],
         include_dirs=[
             numpy.get_include(),
             os.path.join(sys.prefix, 'include'),