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.
The author runs the application development company Cyberneura.
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We look forward to discussing your development needs.