Moving on from our starting counting-down example, let's reconsider the example from the previous chapter. As a refresher, the following is the code for the synchronous version of the program:
# Chapter09/example1.pyfrom math import sqrtdef is_prime(x): print('Processing %i...' % x) if x < 2: print('%i is not a prime number.' % x) elif x == 2: print('%i is a prime number.' % x) elif x % 2 == 0: print('%i is not a prime number.' % x) else: limit = int(sqrt(x)) + 1 for i in range(3, limit, 2): if x % i == 0: print('%i is not a prime number.' % x) return print('%i is a prime number.' % x)if __name__ == '__main__': is_prime(9637529763296797) is_prime(427920331) is_prime(157)
As we discussed in the last chapter, here, ...
