requests_setuppy_microbench.py

import re
import time

reg = re.compile(r'__version__\s*=\s*[\'"]([^\'"]*)[\'"]')

with open('requests/__init__.py', 'r') as fd:
    t1 = time.time()
    version = reg.search(fd.read()).group()
    t2 = time.time()
    print version
    print 'mine:', (t2 - t1) * 1000


with open('requests/__init__.py', 'r') as fd:
    t1 = time.time()
    for line in fd:
        m = reg.match(line)
        if m:
            version = m.group(1)
            break
    t2 = time.time()
    print version
    print 'his', (t2 - t1) * 1000