i have been trying figure out wrong program i've written convert celsius fahrenheit, fahrenheit celsius, , celsius kelvin. i'm assuming has mixing int , str. may wrong.
def menu(): print("make selection:") print("\n1. convert celsius fahrenheit") print("2. convert fahrenheit celsius") print("3. convert celsius kelvin") print("4. exit") choice = int(raw_input("enter choice: ")) return choice def c(f): return str((f - 32) / 1.8) def f(c): return str((c * 100) + 32) def k(c): return str(c + 273.15) def main(): choice = menu() while choice != 4: if choice == 1: #convert c f c = eval(raw_input("enter degrees celsius: ")) print(str(c) + "c = " + str(f)) + "f" elif choice == 2: #convert f c f = eval(raw_input("enter degrees fahrenheit: ")) print(str(f) + "f = " + str(c)) + "c" elif choice == 3: #convert c k k = eval(raw_input("enter degrees celsius: ")) print(str(c) + "c = " + str(k)) + "k" else: print('invalid entry!') choice = menu() main() my output follows when parsed online:
make selection: 1. convert celsius farenheit 2. convert farenheit celsius 3. convert celsius kelvin 4. exit enter choice: traceback (most recent call last): line 39, in <module> main() line 21, in main choice = menu() line 7, in menu choice = int(raw_input("enter choice: ")) eoferror can tell me error is? int & str? raw_input vs input?
rename functions different variables. if conversion functions have same names variables, python 3 give error:
unboundlocalerror: local variable 'f' referenced before assignment python interpret letter variable rather function. in addition, have include function argument. changed f(c) function foo(c) , str(f) str(foo(c)) , program worked expected.
note you're missing ending ) on of print() statements. parentheses required print() in python 3.
also note conversion celsius fahrenheit should (c * 1.8) + 32, not (c * 100) + 32.
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