Comparing Logger Implementations Using Generators and Classes

Generator

def logger(output_file):
    with open(output_file, 'w') as fp:
        while True:
            text = (yield None)
            fp.write(text + '\n')
            print text
l = logger('test-python.log')
l.next()
l.send('The quick')
l.send('Brown fox')
l.send('Jumps over')
l.send('The lazy dog.')

Class

class Logger(object):
    def __init__(self, output_file):
        self.fp = open(output_file, 'w')
def write(self, text):
    self.fp.write(text + '\n')
    print text

def close(self):
    self.fp.close()

l = Logger('test-python.log')
l.write('The quick')
l.write('Brown fox')
l.write('Jumps over')
l.write('The lazy dog.')
l.close()

Output Result

The quick
Brown fox
Jumps over
The lazy dog.

Well, the class wins.