PY: Prime Number Checker

is_prime.py

import time

def is_prime(n):
	if n is 0 or n is 1:
		return False
	else:
		for x in range(2, n):
			if n % x == 0:
				return False
		return True

def is_pri(n):
	if n is 0 or n is 1:
		return False
	else:
		for x in range(2, 11):
			if n % x == 0:
				return False
		return True

start = time.time()
print is_prime(611953)
end = time.time()
print end - start

start = time.time()
print is_pri(611953)
end = time.time()
print end - start