On Jan 21, 2:40 pm, eli m <techgeek...@gmail.com> 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 your code with the irrelevancy stripped away:
function = raw_input("Type in a function:")
#start math loop
if function == "math":
#math code
if function == "random number":
#random code
if function == "games":
#games code
if function == "help":
#help code
else:
print ("Not a valid function")
Say you enter 'math'. It passes the first condition, so runs the math
code.
It then fails on the next 3 conditions, the last of which has an else,
so if you type _anything_ other than 'help', you'll see "Not a valid
function".
Easy answer, use `elif` ("else if") instead of else for the subsequent
tests:
if function == "math":
#math code
elif function == "random number":
#random code
elif function == "games":
#games code
elif function == "help":
#help code
else:
print ("Not a valid function")
Better answer: read up on real functions, and look into dictionary
dispatch:
def f_math():
#math code
def f_random_number():
#random code
<etc>
function_dispatcher = {
'math': f_math,
'random number': f_random_number,
<etc>
}
while cmd == 0:
function_name = raw_input("Type in a function:")
if function_name in function_dispatcher:
function_dispatcher[function_name]()
else:
print("Not a valid function")
To have your functions break out of the loop, use a `global` variable
or pass a context object into each function to allow them to set
`cmd`.
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