Added signal catching and handling in C and Cython

python/obitools3/commands/import.pyx

@@ -43,6 +43,9 @@ from obitools3.uri.decode import open_uri
 
 from obitools3.apps.config import logger
 
+from cpython.exc cimport PyErr_CheckSignals
+
+
 __title__="Imports sequences from different formats into a DMS"
  
  
@@ -189,6 +192,8 @@ def run(config):
     i = 0
     for entry in entries :
         
+        PyErr_CheckSignals()
+
         if entry is None:  # error or exception handled at lower level, not raised because Python generators can't resume after any exception is raised
             if config['obi']['skiperror']:
                 i-=1
@@ -200,8 +205,7 @@ def run(config):
             pb(i)
         elif not i%50000:
             logger("info", "Imported %d entries", i)
-
-                        
+              
         if NUC_SEQS_view: 
             id_col[i] = entry.id
             def_col[i] = entry.definition