Grad Tools yeah | Python Fiddle

# gradient tools

choice = None

while choice != "0":
   
   print(
   """
   Menu\n
   1 = interpolate a level
   2 = calculate a gradient press
   3 = calculate a level using a gradient press
   0 = quit
   """)
   
   choice = input("\nChoice: ")
   
   if choice == "1":
      menu = None
      
      while menu != "0":
      
         menu = input("\nPress enter to interpolate or 0 to return menu: ")
      
         if menu == "":
            
            spot1 = float(input("Enter spot 1: "))
            spot2 = float(input("Enter spot 2: "))
            distance1 = float(input("Distance between spots 1 and 2: "))
            distance2 = float(input("Distance between spot 1 and interploted spot: "))

spot3 = round(((((spot2 - spot1) / distance1) * distance2) + spot1), 3)

print("\nInterpolated spot is: ", spot3, "\n")

elif menu == "0":
         
            print(" ")
   
   elif choice == "2":
      menu = None
      
      while menu != "0":
      
         menu = input("\nPress enter to calculate gradient or 0 to return to menu: ")
         
         if menu == "":
           
            spot1 = float(input("Enter spot 1: "))
            spot2 = float(input("Enter spot 2: "))
            distance1 = float(input("Distance between spots 1 and 2: "))
            
            if spot1 >= spot2:
               
               gradient = round((1 / ((spot1 - spot2) / distance1)), 2)

else:
               gradient = round((1 / ((spot2 - spot1) / distance1)), 2)
               
            print("\nThe gradient is 1 in", gradient)
            
         elif menu == "0":
            print("\n")

elif choice == "3":
      menu = None
		
      while menu != "0":

menu = input("\nPress enter to continue or 0 to return to menu: ") 
         	
         if menu == "":
		
            gradient1 = float(input("Required gradient is 1 in "))
            gradient2 = 1 / gradient1
            distance = float(input("Distance between spots: "))
            spot1 = float(input("Enter fixed spot height: "))
            fall = input("(R)ise or (F)all: ")

if fall == "f":
         
               spot2 = round((spot1 -(gradient2 * distance)), 3)

elif fall == "r":

spot2 = round((spot1 +(gradient2 * distance)), 3)

elif fall != "f" or "r":

fall = input("(R)ise or (F)all: ")

print("\nAdjusted spot height should be", spot2)
		
         elif menu == "0":
           print("\n")
	
   elif choice == "0":
      print("Good bye")
      
input("Press enter to exit.")

Python Fiddle

Python Cloud IDE