i.pansharpen: Fixed bare except clause (#4596)

.flake8

@@ -100,7 +100,7 @@ per-file-ignores =
     scripts/v.import/v.import.py: E722, E501
     scripts/db.univar/db.univar.py: E501
     scripts/d.frame/d.frame.py: E722
-    scripts/i.pansharpen/i.pansharpen.py: E722, E501
+    scripts/i.pansharpen/i.pansharpen.py: E501
     scripts/v.what.strds/v.what.strds.py: E501
     # Line too long (esp. module interface definitions)
     scripts/*/*.py: E501

scripts/i.pansharpen/i.pansharpen.py

@@ -93,6 +93,7 @@
 # %end
 
 import os
+from grass.exceptions import CalledModuleError
 
 try:
     import numpy as np
@@ -458,7 +459,7 @@ def main():
         gs.run_command(
             "g.remove", flags="f", type="raster", pattern="tmp%s*" % pid, quiet=True
         )
-    except:
+    except CalledModuleError:
         pass
 
 
@@ -523,7 +524,7 @@ def brovey(pan, ms1, ms2, ms3, out, pid, sproc):
         pb.wait(), pg.wait(), pr.wait()
         try:
             pb.terminate(), pg.terminate(), pr.terminate()
-        except:
+        except OSError:
             pass
 
     # Cleanup
@@ -535,7 +536,7 @@ def brovey(pan, ms1, ms2, ms3, out, pid, sproc):
             type="raster",
             name="%s,%s,%s" % (panmatch1, panmatch2, panmatch3),
         )
-    except:
+    except CalledModuleError:
         pass
 
 
@@ -575,7 +576,7 @@ def ihs(pan, ms1, ms2, ms3, out, pid, sproc):
     # Cleanup
     try:
         gs.run_command("g.remove", flags="f", quiet=True, type="raster", name=panmatch)
-    except:
+    except CalledModuleError:
         pass
 
 
@@ -701,7 +702,7 @@ def pca(pan, ms1, ms2, ms3, out, pid, sproc):
         pb.wait(), pg.wait(), pr.wait()
         try:
             pb.terminate(), pg.terminate(), pr.terminate()
-        except:
+        except OSError:
             pass
 
     # Cleanup