Check to see if corresponding C and F values are prime.

C_and_F_primes.py

from pyprimes import isprime

'''
Quick little program I came up with. I was driving around Auburn when I
wondered what temperatures could be prime for both F and C.

(C) Markus Kreitzer, 2014

This work is licensed under the Creative Commons 
Attribution-NonCommercial-ShareAlike 4.0 International License. 
To view a copy of this license, 
visit http://creativecommons.org/licenses/by-nc-sa/4.0/.
'''

def toF(celsius):
    """
    Check to make sure that the resulting F calc is an integer also. If it 
    isn't, we return a False which can be caught later.
    """
    a = celsius * 9
    if a % 5 != 0:
        return False
    #### END if 
    return a/5 + 32
#### END toF

def check_C_F(C):
    if not isprime(C):
        return False 
    #### END if
    F = toF(C)
    if F == False or F < 0 or not isprime(F):
       return False
    #### END if         
    return C,F 
#### END check_C_F

ranger = 1000000
for num in range(1,ranger):
    numbers = check_C_F(num)
    if numbers == False:
        pass 
    else:
        print "%i degC, %i degF" % numbers
    #### END if 
#### END for
print "DONE"