1313
1414__all__ = ['issiso' ,'timebase' ,'common_timebase' ,'timebaseEqual' ,
1515'isdtime' ,'isctime' ]
16+
1617# Define module default parameter values
1718_namedio_defaults = {
1819'namedio.state_name_delim' :'_' ,
@@ -57,6 +58,8 @@ def _name_or_default(self, name=None):
5758if name is None :
5859name = "sys[{}]" .format (NamedIOSystem ._idCounter )
5960NamedIOSystem ._idCounter += 1
61+ elif re .match (r".*\..*" ,name ):
62+ raise ValueError (f"invalid system name '{ name } )
6063return name
6164
6265# Check if system name is generic
@@ -174,7 +177,6 @@ def copy(self, name=None, use_prefix_suffix=True):
174177return newsys
175178
176179def set_inputs (self ,inputs ,prefix = 'u' ):
177-
178180"""Set the number/names of the system inputs.
179181
180182 Parameters
@@ -258,7 +260,7 @@ def set_states(self, states, prefix='x'):
258260
259261 """
260262self .nstates ,self .state_index = \
261- _process_signal_list (states ,prefix = prefix )
263+ _process_signal_list (states ,prefix = prefix , allow_dot = True )
262264
263265def find_state (self ,name ):
264266"""Find the index for a state given its name (`None` if not found)"""
@@ -613,7 +615,7 @@ def _process_dt_keyword(keywords, defaults={}, static=False):
613615
614616
615617# Utility function to parse a list of signals
616- def _process_signal_list (signals ,prefix = 's' ):
618+ def _process_signal_list (signals ,prefix = 's' , allow_dot = False ):
617619if signals is None :
618620# No information provided; try and make it up later
619621return None , {}
@@ -624,10 +626,17 @@ def _process_signal_list(signals, prefix='s'):
624626
625627elif isinstance (signals ,str ):
626628# Single string given => single signal with given name
629+ if not allow_dot and re .match (r".*\..*" ,signals ):
630+ raise ValueError (
631+ f"invalid signal name '{ signals } )
627632return 1 , {signals :0 }
628633
629634elif all (isinstance (s ,str )for s in signals ):
630635# Use the list of strings as the signal names
636+ for signal in signals :
637+ if not allow_dot and re .match (r".*\..*" ,signal ):
638+ raise ValueError (
639+ f"invalid signal name '{ signal } )
631640return len (signals ), {signals [i ]:i for i in range (len (signals ))}
632641
633642else :