Temperature Conversation Application in Python (Python recipe) by Captain DeadBones

ActiveState Code (http://code.activestate.com/recipes/578804/)

check the line 63..f2K 'K' will be small 'k'

With below changes,

1. you do not have to remember assignment w.r.t conversion function. For e.g. 1 for celsius to #farehnite.

2. avoid long list of if - else.

def c2f(t): o = (t*9/5.0)+32 print str(t) + " degree Celsius is " + str(o) + " degree Fahrenheit"

def c2k(t): o = t+273.15 print str(t) + " degree Celsius is " + str(o) + " degree Kelvin"

def f2c(t): o = (t-32)*5.0/9 print str(t) + " degree Fahrenheit is " + str(o) + " degree Celsius"

def f2k(t): o = (t+459.67)*5.0/9 print str(t) + " degree Fahrenheit is " + str(o) + " degree Kelvin"

def k2c(t): o = t-273.15 print str(t) + " degree Kelvin is " + str(o) + " degree Celsius"

def k2f(t): o = (t*9/5.0)-459.67 print str(t) + " degree Kelvin is " + str(o) + " degree Fahrenheit"

d = { 1 : {
'fun' : c2f, }, 2 : {
'fun' : c2k, }, 3 : {
'fun' : f2c, }, 4 : {
'fun' : f2k, }, 5 : {
'fun' : k2c, }, 6 : {
'fun' : k2f, }, }

def get_user_input():

user_input = 0
while type(user_input) != type(1.0): 
    user_input = raw_input("Enter degrees to convert: ")
    try:
        user_input = float(user_input)
    except:
        print user_input + " is not a valid entry"
return user_input

def main():

menu = "\nTemperature Convertor\n\n"+\
    "1. Celsius to Fahrenheit\n"+\
    "2. Celsius to Kelvin\n"+\
    "3. Fahrenheit to Celsius\n"+\
    "4. Fahrenheit to Kelvin\n"+\
    "5. Kelvin to Celsius\n"+\
        "6. Kelvin to Fahrenheit\n"+\
    "7. Quit"

user_input = 0
while user_input != 7: 
    print menu
    user_input = raw_input("Please enter a valid selection: ")

    try:
        user_input = int(user_input)
    except:
        print user_input + " is not a valid selction, please try again\n"

    if user_input > 0 and user_input <= 7:
        if user_input == 7:
            quit()
        t = get_user_input()
        tmp = d[user_input]['fun'](t)
    else:
        print str(user_input) + " is not a valid selection, please try again\n"

if __name__ == "__main__": main()