Comparing Logger Implementations Using Generators and Classes
2013-11-18 11:41 (11 years ago)
ytyng
I wanted to write a logger-like class and wondered, "Which would be more readable, using a generator or a class?" So I wrote and compared both.
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.
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