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Date: Sun, 20 Jan 2013 23:57:03 -0500
From: Mitya Sirenef <msirenef@lightbird.net>
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Subject: Re: Else statement executing when it shouldnt
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On 01/20/2013 11:40 PM, eli m wrote:
> an else statement is running  when it shouldnt be. It is on the last line. Whenever i am in the math 
or game function, when i type in main, it goes back to the start of the 
program, but it also says not a valid function. I am stumped!
 > Here is my code:
 > #Cmd
 > #Created By Eli M.
 > #import modules
 > import random
 > import math
 > gtn = 0
 > print ("Type in help for a list of cmd functions")
 > #initiate main loop
 > cmd = 0
 > while cmd == 0:
 > #ask for input on function
 > function = raw_input("Type in a function:")
 > #start math loop
 > if function == "math":
 > run = 0
 > while run == 0:
 > #ask for math operation
 > type = raw_input("What math operation do you want to use?")
 > if type == "multiplication":
 > x = raw_input("Type in your first number:")
 > y = raw_input("Multiply your first number by:")
 > try:
 > ans = int(x) * int(y)
 > print (ans)
 > try:
 > ans = float(x) * float(y)
 > print (ans)
 > except ValueError, err:
 > print ("Not a valid number")
 > except OverflowError, err:
 > print ("Number too large")
 > #division math function
 > if type == "division":
 > x = raw_input("Type in your first number:")
 > y = raw_input("Divide your first number by:")
 > try:
 > ans = float(x) / float(y)
 > print (ans)
 > except ZeroDivisionError, err:
 > print ("Can't divide by zero")
 > except ValueError, err:
 > print ("Not a valid number")
 > except OverflowError, err:
 > print ("Number too large")
 > #subtraction math function
 > if type == "subtraction":
 > x = raw_input("Type in your first number:")
 > y = raw_input("Subtract your first number by:")
 > try:
 > ans = float(x) - float(y)
 > print (ans)
 > except ValueError, err:
 > print ("Not a valid number")
 > #addition math function
 > if type == "addition":
 > x = raw_input("Type in your first number:")
 > y = raw_input("Add your first number by:")
 > try:
 > ans = float(x) + float(y)
 > print (ans)
 > except ValueError, err:
 > try:
 > ans = int(x) + int(y)
 > print (ans)
 > except ValueError, err:
 > print ("Not a valid number")
 > except OverflowError, err:
 > print ("Number too large")
 > #square root math function
 > if type == "square root":
 > x = raw_input("Type in your number:")
 > try:
 > y = float(x)
 > z = math.sqrt(y)
 > print (z)
 > except ValueError, err:
 > print ("Not a valid number")
 > except OverflowError, err:
 > print ("Number too large")
 >
 > #to the power of... math function
 > if type == "power":
 > x = raw_input("Type in your number:")
 > y = raw_input("Multiply your first number by the power of:")
 > try:
 > ans = float(x) ** float(y)
 > print (ans)
 > except OverflowError, err:
 > print ("Number too large")
 > except ValueError, err:
 > print ("Not a valid number")
 > #break the math loop
 > if type == "main":
 > run = 1
 > #absolute value math function
 > if type == "absolute value":
 > try:
 > x = float(raw_input("Type in your number:"))
 > y = math.fabs(x)
 > print (y)
 > except ValueError, err:
 > print ("Not a valid number")
 > if function == "random number":
 > try:
 > x = int(raw_input("Minimum number:"))
 > y = int(raw_input("Maximum number:"))
 > num = random.randint(x, y)
 > print (num)
 > except ValueError, err:
 > print ("Not a valid number")
 > if function == "games":
 > games = 0
 > while games == 0:
 > gamechoice = raw_input("What game do you want to play:")
 > if gamechoice == "guess the number":
 > run = 0
 > while run == 0:
 > print ("I am thinking of a number between 1 and 20")
 > num = random.randint(1, 20)
 > num = int(num)
 > guesses = 0
 > guessestaken = 0
 > while guesses == 0:
 > try:
 > guess = raw_input("Your guess:")
 > guess = int(guess)
 > guessestaken = (guessestaken) + 1
 > guessestaken = int(guessestaken)
 > if guess == (num):
 > print 'Correct! It took you', int(guessestaken), 'guesses!'
 > playagain = raw_input("Do you want to play again?")
 > if playagain == "yes":
 > guesses = 1
 > if playagain == "no":
 > run = 1
 > guesses = 1
 > if guess > num:
 > print ("My number is lower")
 > if guess < num:
 > print ("My number is higher")
 > except TypeError, err:
 > print ("Not a valid number")
 > if gamechoice == "main":
 > games = 1
 >
 > #help function
 > if function == "help":
 > helpfunc = 0
 > while helpfunc == 0:
 > #show functions
 > print ("Functions:")
 > print ("Math: multiplication, division, subtraction, addition, square 
root, power, absolute value")
 > print ("Random Number")
 > print ("Games: Guess the number")
 > helpmain = raw_input("Type in main to go back")
 > if helpmain == "main":
 > #end helpfunction loop
 > helpfunc = 1
 > cmd = 0
 > else:
 > print ("Not a valid function")


Your else is lined up with while, not with if.

  -m


-- 
Lark's Tongue Guide to Python: http://lightbird.net/larks/

When a friend succeeds, I die a little.  Gore Vidal