G Code Syntax Check (Python + Qt Designer)

def load_selected_gcode(self):        
if self.modenumber_str != "Auto":             
self.show_message("Invalid Mode", "Switch to Auto Mode.",0)             
return        
index = self.w.listGCodeFiles.currentIndex()        
file_name = self.model.data(index, QtCore.Qt.DisplayRole)         
file_path = os.path.join(self.gcode_directory, file_name)        
self.loaded_gcod = file_path        
with open(file_path, 'r') as file:             
gcode_content = file.read()         
self.w.showGCode.setText(gcode_content)        
self.command.reset_interpreter()         
self.command.program_open(file_path)        
self.show_message("Success", "G Code is loaded successfully", 1)