Add exception handling to file open

README.md

@@ -50,7 +50,7 @@ Enter setup mode.
 Copy boot.py to the root of the pico-ducky.  
 Copy your payload script to the pico-ducky.  
 Disconnect the pico from your host PC.
-Connect a jumper wire between pin 18 (GND) and pin 20 (GPIO15).
+Connect a jumper wire between pin 18 (`GND`) and pin 20 (`GPIO15`).
 This will prevent the pico-ducky from showing up as a USB drive when plugged into the target computer.  
 Remove the jumper and reconnect to your PC to reprogram.
 The default mode is USB mass storage enabled.   

duckyinpython.py

@@ -127,6 +127,7 @@ def runScript(file):
     global defaultDelay
 
     duckyScriptPath = file
+    try:
         f = open(duckyScriptPath,"r",encoding='utf-8')
         previousLine = ""
         for line in f:
@@ -140,6 +141,8 @@ def runScript(file):
                 parseLine(line)
                 previousLine = line
             time.sleep(float(defaultDelay)/1000)
+    except OSError as e:
+        print("Unable to open file ", file)
 
 def selectPayload():
     payload = "payload.dd"