Python学习笔记415

Python 2

print'Python', python_version()

print'\ntiming range()' 

%timeit test_range(n)

print'\n\ntiming xrange()' 

%timeit test_xrange(n)

Python2.7.6

timing range()

1000 loops, best of 3:433µs per loop

timing xrange()

1000 loops, best of 3:350µs per loop

Python 3

print('Python', python_version())

print('\ntiming range()')

%timeit test_range(n)

Python3.4.1

timing range()

1000 loops, best of 3:520µs per loop

print(xrange(10))

---------------------------------------------------------------------------

NameError                                 Traceback(most recent call last)

<ipython-input-5-5d8f9b79ea70>in()

---->1print(xrange(10))

NameError: name 'xrange'isnotdefined