How to Round to 2 Decimals with Python?

Use the round function to limit a floating-point result to 2 decimal places.
In your Fahrenheit to Celsius converter, you can round the result before displaying it.

Modified version of your code:

def main():
   printC(formeln(typeHere()))

def typeHere():
   global Fahrenheit
   try:
       Fahrenheit = int(raw_input("Hi! Enter Fahrenheit value, and get it in Celsius!\n"))
   except ValueError:
       print "\nYour insertion was not a digit!"
       print "We've put your Fahrenheit value to 50!"
       Fahrenheit = 50
   return Fahrenheit

def formeln(c):
   Celsius = (Fahrenheit - 32.00) * 5.00 / 9.00
   return round(Celsius, 2)

def printC(answer):
   print "\nYour Celsius value is {:.2f} C.\n".format(answer)

main()

This code uses round to limit the Celsius value to 2 decimal places and string formatting to always display two digits after the decimal, even for whole numbers.

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