Add more fun continuous input for users on example 5b in fw

Author: malcolm-sparkfun

source_only_examples/project5_b.py

@@ -136,7 +136,14 @@ def drive(inputString):
  return
 
  direction = inputList[0].lower() # Get the first word and convert it to lowercase (so we can accept 'f' or 'F')
- distance = int(inputList[1]) # Get the second word and convert it to an integer
+ # Code that we put in the "try" block might cause an error, so we can catch that error with "except" and handle it gracefully
+ # For example if the user enters something weird for distance like "ten" instead of "10", the int() function will throw an error
+ # and we can catch that error and print a message instead of the program crashing
+ try:
+ distance = int(inputList[1]) # Get the second word and convert it to an integer
+ except:
+ print("Invalid distance. Please enter a valid number.")
+ return
 
  # check the switch state and only drive if the switch is pressed
  if switchPin.value() == 1: # If the switch is in OFF position
@@ -171,3 +178,8 @@ def drive(inputString):
 # print("Executing command:", c)
 # drive(c) # Execute each command in the list
 # sleep(1) # Add a delay between commands to see what's happening more clearly
+
+# The below code will run forever and allow us to enter further commands interactively!
+while True:
+ c = input("Enter a new command!: ") # Get user input in the c variable in the form of "f 10" or "r 90"
+ drive(c)