Python3 conversion + a little more generator fuckery

cardlistener.py

@@ -1,4 +1,5 @@
 import time , json
+#import simplejson as json
 import RPi.GPIO as GPIO
 import keyboard
 import subprocess
@@ -44,10 +45,15 @@ if __name__ == '__main__':
     GPIO.output(pin_config['tools_red_LED'], GPIO.LOW)
 
     while True:
-        print "Enter card ID:"
+        print ("Enter card ID:")
+        cardID=''
         cardID_input = keyboard.record(until='enter')
-        cardID = keyboard.get_typed_strings(cardID_input).next()
+        cardID_gen = keyboard.get_typed_strings(cardID_input)
+        for i in cardID_gen:
+          cardID += i
         event = {}
+
+
         event["time"] = time.time()
         event["cardID"] = cardID
         event["name"] = ''
@@ -97,15 +103,19 @@ if __name__ == '__main__':
                         GPIO.output(pin_config['fridge_red_LED'], GPIO.LOW)
                         GPIO.output(pin_config['tools_red_LED'], GPIO.LOW)
                         wait = False
-        except:
+        except Exception as e:
             btnBlink()
-            print "Card not registered."
+            print( "Card not registered.")
+            print(e)
+
         history = []
         try:
             with open('history.json', 'r') as json_data:
                 history = json.load(json_data)
-        except:
-            print 'Initializing new history file.'
+                
+        except Exception as e:
+            print('Initializing new history file.')
+            print(e)
         finally:
             history.append(event)
         with open('history.json', 'w') as outfile:

server.py

@@ -65,7 +65,7 @@ def users(what):
 		subprocess.call("/home/pi/ELAB-RFID-I2C/RPi/i2c_challenge 0x20", shell=True)
 	elif what == "tools":
 		subprocess.call("/home/pi/ELAB-RFID-I2C/RPi/i2c_challenge 0x30", shell=True)
-	print 'opened', what
+	print('opened', what)
 	return redirect(url_for('status'))
 
 @app.route('/gethistory')