安装完成之后就可以使用nose了，下面介绍简单的用法。

   def test_numbers_3_4():print 'success'assert 3*4 ==12

打开终端，进入test_nose.py所在的路径，运行nosetests   -s  test_nose.py,-s、-v分别表示是否打印内部的print输出信息

success
.
----------------------------------------------------------------------
Ran 1 test in 0.001sOK

-v返回结果：

test_nose.test_numbers_3_4 ... ok----------------------------------------------------------------------
Ran 1 test in 0.002sOK

无参数：

.
----------------------------------------------------------------------
Ran 1 test in 0.001sOK

b.关于nose的setup()和teardown()函数的用法

• module
• class
• function

from nose import with_setup
def my_setup_function():print 'this is my_setup_function'
def my_teardown_function():print 'this is my_teardown_function'@with_setup(my_setup_function,my_teardown_function)
def test_numbers_3_4():print 'success'assert 3*4 ==12

返回结果：

this is my_setup_function
success
this is my_teardown_function
.
----------------------------------------------------------------------
Ran 1 test in 0.001sOK

如果不喜欢使用装饰器，也可以直接赋属性值：

test_numbers_3_4.setup = my_setup_function
test_numbers_3_4.teardown = my_teardown_function

2）作用于class中的，不带@classmethod的运行于每一个test的前后，带有@classmethod的运行与开始于与结束

class TestUM:def setup(self):print ("TestUM:setup() before each test method")def teardown(self):print ("TestUM:teardown() after each test method")@classmethoddef setup_class(cls):print ("setup_class() before any methods in this class")@classmethoddef teardown_class(cls):print ("teardown_class() after any methods in this class")def test_numbers_5_6(self):print 'test_numbers_5_6()  <============================ actual test code'assert 5*6 == 30def test_strings_b_2(self):print 'test_strings_b_2()  <============================ actual test code'assert 'b'*2 == 'bb'

返回值：

setup_class() before any methods in this class
TestUM:setup() before each test method
test_numbers_5_6()  <============================ actual test code
TestUM:teardown() after each test method
.TestUM:setup() before each test method
test_strings_b_2()  <============================ actual test code
TestUM:teardown() after each test method
.teardown_class() after any methods in this class----------------------------------------------------------------------
Ran 2 tests in 0.002sOK

3）作用于module的，运行与模块的开始于结束：

from nose import with_setup
def my_setup_function():print 'this is my_setup_function'
def my_teardown_function():print 'this is my_teardown_function'
#module
def setup_module(module):print ("") # this is to get a newline after the dotsprint ("setup_module before anything in this file")
def teardown_module(module):print ("teardown_module after everything in this file")
#function
@with_setup(my_setup_function,my_teardown_function)
def test_numbers_3_4():print 'success'assert 3*4 ==12@with_setup(my_setup_function,my_teardown_function)
def test_numbers_2_3():print 'fail'assert 2+3 == 5# test_numbers_3_4.setup = my_setup_function
# test_numbers_3_4.teardown = my_teardown_function#class
class TestUM:def setup(self):print ("TestUM:setup() before each test method")def teardown(self):print ("TestUM:teardown() after each test method")@classmethoddef setup_class(cls):print ("setup_class() before any methods in this class")@classmethoddef teardown_class(cls):print ("teardown_class() after any methods in this class")def test_numbers_5_6(self):print 'test_numbers_5_6()  <============================ actual test code'assert 5*6 == 30def test_strings_b_2(self):print 'test_strings_b_2()  <============================ actual test code'assert 'b'*2 == 'bb'

返回结果：

setup_module before anything in this file
setup_class() before any methods in this class
TestUM:setup() before each test method
test_numbers_5_6()  <============================ actual test code
TestUM:teardown() after each test method
.TestUM:setup() before each test method
test_strings_b_2()  <============================ actual test code
TestUM:teardown() after each test method
.teardown_class() after any methods in this class
this is my_setup_function
success
this is my_teardown_function
.this is my_setup_function
fail
this is my_teardown_function
.teardown_module after everything in this file----------------------------------------------------------------------
Ran 4 tests in 0.001sOK

3.nose 可以直接运行unittest的测试用例