Remove restriction on existing file in EventSource.input_url

ctapipe/io/eventsource.py

@@ -83,11 +83,7 @@ class EventSource(Component):
         generated events. If None, all available telescopes are used.
     """
 
-    input_url = Path(
-        directory_ok=False,
-        exists=True,
-        help="Path to the input file containing events.",
-    ).tag(config=True)
+    input_url = Path(help="Path to the input file containing events.").tag(config=True)
 
     max_events = Int(
         None,

ctapipe/io/hdf5eventsource.py

@@ -1,43 +1,44 @@
-import astropy.units as u
-from astropy.utils.decorators import lazyproperty
 import logging
+from ast import literal_eval
+from pathlib import Path
+
+import astropy.units as u
 import numpy as np
 import tables
-from ast import literal_eval
+from astropy.utils.decorators import lazyproperty
 
-from ..core import Container, Field
-from ..instrument import SubarrayDescription
 from ..containers import (
-    ConcentrationContainer,
     ArrayEventContainer,
+    CameraHillasParametersContainer,
+    CameraTimingParametersContainer,
+    ConcentrationContainer,
     DL1CameraContainer,
     EventIndexContainer,
-    CameraHillasParametersContainer,
     HillasParametersContainer,
+    ImageParametersContainer,
     IntensityStatisticsContainer,
     LeakageContainer,
     MorphologyContainer,
     ParticleClassificationContainer,
+    PeakTimeStatisticsContainer,
+    R1CameraContainer,
     ReconstructedEnergyContainer,
-    SimulationConfigContainer,
-    SimulatedShowerContainer,
+    ReconstructedGeometryContainer,
     SimulatedEventContainer,
-    PeakTimeStatisticsContainer,
-    CameraTimingParametersContainer,
+    SimulatedShowerContainer,
+    SimulationConfigContainer,
+    TelescopeImpactParameterContainer,
+    TelescopeTriggerContainer,
+    TelEventIndexContainer,
     TimingParametersContainer,
     TriggerContainer,
-    ImageParametersContainer,
-    TelEventIndexContainer,
-    TelescopeTriggerContainer,
-    R1CameraContainer,
-    TelescopeImpactParameterContainer,
-    ReconstructedGeometryContainer,
 )
+from ..core import Container, Field
+from ..instrument import SubarrayDescription
+from ..utils import IndexFinder
+from .datalevels import DataLevel
 from .eventsource import EventSource
 from .hdf5tableio import HDF5TableReader
-from .datalevels import DataLevel
-from ..utils import IndexFinder
-
 from .tableloader import DL2_SUBARRAY_GROUP, DL2_TELESCOPE_GROUP
 
 __all__ = ["HDF5EventSource"]
@@ -161,21 +162,26 @@ def close(self):
 
     @staticmethod
     def is_compatible(file_path):
+        path = Path(file_path).expanduser()
+        if not path.is_file():
+            return False
 
-        with open(file_path, "rb") as f:
+        with path.open("rb") as f:
             magic_number = f.read(8)
 
         if magic_number != b"\x89HDF\r\n\x1a\n":
             return False
 
-        with tables.open_file(file_path) as f:
+        with tables.open_file(path) as f:
             metadata = f.root._v_attrs
             if "CTA PRODUCT DATA LEVEL" not in metadata._v_attrnames:
                 return False
 
             # we can now read both R1 and DL1
             datalevels = set(literal_eval(metadata["CTA PRODUCT DATA LEVEL"]))
-            if not datalevels.intersection(("R1", "DL1_IMAGES", "DL1_PARAMETERS")):
+            if not datalevels.intersection(
+                ("R1", "DL1_IMAGES", "DL1_PARAMETERS", "DL2")
+            ):
                 return False
 
             if "CTA PRODUCT DATA MODEL VERSION" not in metadata._v_attrnames:

ctapipe/io/simteleventsource.py

@@ -380,7 +380,10 @@ def prepare_subarray_info(self, telescope_descriptions, header):
 
     @staticmethod
     def is_compatible(file_path):
-        return is_eventio(Path(file_path).expanduser())
+        path = Path(file_path).expanduser()
+        if not path.is_file():
+            return False
+        return is_eventio(path)
 
     @property
     def subarray(self):