[Tutor] Re Help with this script

[John Carmona]

Thanks Kent, it is working now. Is this what you meant in your reply? 
Because if I set up the main code at the end of the script I was still 
getting an error message.

Also, what do I need to use if for example I want my code to rerun once I 
have computed let's say a volume. Right now the execution of the script 
gives me "None" at the end.

Thanks
JC
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#By J Carmona
#Programme that compute volumes or surfaces
##First menu is for the calculation of area
##Second menu is for the calculation of volume
##First ask the user what he wants to do
running = True
def area_rect():
       length = input("Length: ")
       width = input ("Width: ")
       print "The area is: ",length*width
def area_circ():
       radius = input("What is the radius?: ")
       print "The area is approximately: ", 3.14159*(radius**2)
def area_squ():
       side = input ("What is the length of one side?: ")
       print "The area is: ", side*side
def area_tgle():
       base = input ("What is the base of the triangle?: ")
       heigth = input ("What is the heigth of the triangle?: ")
       print "The area is: ",base*heigth/2
def vol_sph():
       radius = input("What is the radius?: ")
       print "The volume is: ", (4*3.14159*radius**3)/3
def vol_cube():
       side = input("Side: ")
       print "The volume is: ",side**3
def vol_box():
       width = input ("What is the width of the box?: ")
       length = input ("What is the length of the box?: ")
       depth = input ("What is the depth of the box?: ")
       print "The volume is: ", width*length*depth
def vol_cone():
       radius = input ("What is the radiux of the base of the cone?: ")
       heigth = input ("What is the heigth of the cone?: ")
       print "The volume is: ", (1/3)(3.144159*(radius**2))(heigth)
def task_options():
       print "---------------------------------------"
       print "Options:"
       print "a. Print options: "
       print "b. Do you want to calculate areas?: "
       print "c. Do you want to calculate volumes?: "
       print "d. Quit the programme"
       print "---------------------------------------"
       choice = raw_input("Choose an option: ")
       if choice == 'a':
           print task_options()
       elif choice == 'b':
           print print_options()
       elif choice == 'c':
           print print_options_2()
       elif choice == 'd':
           running = False
def print_options():
       print "------------------------------"
       print "Options:"
       print "a. print options"
       print "b. calculate circle area"
       print "c. calculate square area"
       print "d. calculate rectangle area"
       print "e. calculate triangle area"
       print "f. quit the programme"
       print "------------------------------"
       choice = raw_input("Choose an option: ")
       if choice == 'a':
           print_options()
       elif choice == 'b':
           area_circ()
       elif choice == 'c':
           area_squ()
       elif choice == 'd':
           area_rect()
       elif choice == 'e':
           area_tgle()
       elif choice == 'f':
           print_options()
def print_options_2():
       print "------------------------------"
       print "Options:"
       print "a. print options"
       print "b. calculate the volume of a sphere"
       print "c. calculate the volume of a cube"
       print "d. calculate the volume of a box"
       print "e. calculate the volume of a cone"
       print "f. quit the programme"
       print "------------------------------"
       choice = raw_input("Choose an option: ")
       if choice == 'a':
           print_options()
       elif choice == 'b':
           vol_sph()
       elif choice == 'c':
           vol_cube()
       elif choice == 'd':
           vol_box()
       elif choice == 'e':
           vol_cone()
       elif choice == 'e':
           print_options()
#Call starting menu
print task_options()

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