Python random 模块，choose() 实例源码

我们从Python开源项目中，提取了以下17个代码示例，用于说明如何使用random.choose()。

项目：code 作者：ActiveState | 项目源码 | 文件源码

def windex(lst):
    '''an attempt to make a random.choose() function that makes weighted choices

    accepts a list of tuples with the item and probability as a pair
    like: >>> x = [('one', 0.25), ('two', 0.25), ('three', 0.5)]
    >>> y=windex(x)'''
    n = random.uniform(0, 1)
    for item, weight in lst:
        if n < weight:
            break
        n = n - weight
    return item

项目：zippy 作者：securesystemslab | 项目源码 | 文件源码

def __init__(self, *args, **kw):
        self.package_name = 'PACKAGE_'
        while self.package_name in sys.modules:
            self.package_name += random.choose(string.ascii_letters)
        self.module_name = self.package_name + '.foo'
        unittest.TestCase.__init__(self, *args, **kw)

项目：zippy 作者：securesystemslab | 项目源码 | 文件源码

def test_package_import__semantics(self):

        # Generate a couple of broken modules to try importing.

        # ...try loading the module when there's a SyntaxError
        self.rewrite_file('for')
        try: __import__(self.module_name)
        except SyntaxError: pass
        else: raise RuntimeError('Failed to induce SyntaxError') # self.fail()?
        self.assertNotIn(self.module_name, sys.modules)
        self.assertFalse(hasattr(sys.modules[self.package_name], 'foo'))

        # ...make up a variable name that isn't bound in __builtins__
        var = 'a'
        while var in dir(__builtins__):
            var += random.choose(string.ascii_letters)

        # ...make a module that just contains that
        self.rewrite_file(var)

        try: __import__(self.module_name)
        except NameError: pass
        else: raise RuntimeError('Failed to induce NameError.')

        # ...now  change  the module  so  that  the NameError  doesn't
        # happen
        self.rewrite_file('%s = 1' % var)
        module = __import__(self.module_name).foo
        self.assertEqual(getattr(module, var), 1)

项目：oil 作者：oilshell | 项目源码 | 文件源码

def __init__(self, *args, **kw):
        self.package_name = 'PACKAGE_'
        while self.package_name in sys.modules:
            self.package_name += random.choose(string.letters)
        self.module_name = self.package_name + '.foo'
        unittest.TestCase.__init__(self, *args, **kw)

项目：oil 作者：oilshell | 项目源码 | 文件源码

def test_package_import__semantics(self):

        # Generate a couple of broken modules to try importing.

        # ...try loading the module when there's a SyntaxError
        self.rewrite_file('for')
        try: __import__(self.module_name)
        except SyntaxError: pass
        else: raise RuntimeError, 'Failed to induce SyntaxError'
        self.assertNotIn(self.module_name, sys.modules)
        self.assertFalse(hasattr(sys.modules[self.package_name], 'foo'))

        # ...make up a variable name that isn't bound in __builtins__
        var = 'a'
        while var in dir(__builtins__):
            var += random.choose(string.letters)

        # ...make a module that just contains that
        self.rewrite_file(var)

        try: __import__(self.module_name)
        except NameError: pass
        else: raise RuntimeError, 'Failed to induce NameError.'

        # ...now  change  the module  so  that  the NameError  doesn't
        # happen
        self.rewrite_file('%s = 1' % var)
        module = __import__(self.module_name).foo
        self.assertEqual(getattr(module, var), 1)

项目：python2-tracer 作者：extremecoders-re | 项目源码 | 文件源码

def __init__(self, *args, **kw):
        self.package_name = 'PACKAGE_'
        while self.package_name in sys.modules:
            self.package_name += random.choose(string.letters)
        self.module_name = self.package_name + '.foo'
        unittest.TestCase.__init__(self, *args, **kw)

项目：python2-tracer 作者：extremecoders-re | 项目源码 | 文件源码

def test_package_import__semantics(self):

        # Generate a couple of broken modules to try importing.

        # ...try loading the module when there's a SyntaxError
        self.rewrite_file('for')
        try: __import__(self.module_name)
        except SyntaxError: pass
        else: raise RuntimeError, 'Failed to induce SyntaxError'
        self.assertNotIn(self.module_name, sys.modules)
        self.assertFalse(hasattr(sys.modules[self.package_name], 'foo'))

        # ...make up a variable name that isn't bound in __builtins__
        var = 'a'
        while var in dir(__builtins__):
            var += random.choose(string.letters)

        # ...make a module that just contains that
        self.rewrite_file(var)

        try: __import__(self.module_name)
        except NameError: pass
        else: raise RuntimeError, 'Failed to induce NameError.'

        # ...now  change  the module  so  that  the NameError  doesn't
        # happen
        self.rewrite_file('%s = 1' % var)
        module = __import__(self.module_name).foo
        self.assertEqual(getattr(module, var), 1)

项目：web_ctp 作者：molebot | 项目源码 | 文件源码

def __init__(self, *args, **kw):
        self.package_name = 'PACKAGE_'
        while self.package_name in sys.modules:
            self.package_name += random.choose(string.ascii_letters)
        self.module_name = self.package_name + '.foo'
        unittest.TestCase.__init__(self, *args, **kw)

项目：web_ctp 作者：molebot | 项目源码 | 文件源码

def test_package_import__semantics(self):

        # Generate a couple of broken modules to try importing.

        # ...try loading the module when there's a SyntaxError
        self.rewrite_file('for')
        try: __import__(self.module_name)
        except SyntaxError: pass
        else: raise RuntimeError('Failed to induce SyntaxError') # self.fail()?
        self.assertNotIn(self.module_name, sys.modules)
        self.assertFalse(hasattr(sys.modules[self.package_name], 'foo'))

        # ...make up a variable name that isn't bound in __builtins__
        var = 'a'
        while var in dir(__builtins__):
            var += random.choose(string.ascii_letters)

        # ...make a module that just contains that
        self.rewrite_file(var)

        try: __import__(self.module_name)
        except NameError: pass
        else: raise RuntimeError('Failed to induce NameError.')

        # ...now  change  the module  so  that  the NameError  doesn't
        # happen
        self.rewrite_file('%s = 1' % var)
        module = __import__(self.module_name).foo
        self.assertEqual(getattr(module, var), 1)

项目：pefile.pypy 作者：cloudtracer | 项目源码 | 文件源码

def __init__(self, *args, **kw):
        self.package_name = 'PACKAGE_'
        while self.package_name in sys.modules:
            self.package_name += random.choose(string.letters)
        self.module_name = self.package_name + '.foo'
        unittest.TestCase.__init__(self, *args, **kw)

项目：pefile.pypy 作者：cloudtracer | 项目源码 | 文件源码

def test_package_import__semantics(self):

        # Generate a couple of broken modules to try importing.

        # ...try loading the module when there's a SyntaxError
        self.rewrite_file('for')
        try: __import__(self.module_name)
        except SyntaxError: pass
        else: raise RuntimeError, 'Failed to induce SyntaxError'
        self.assertNotIn(self.module_name, sys.modules)
        self.assertFalse(hasattr(sys.modules[self.package_name], 'foo'))

        # ...make up a variable name that isn't bound in __builtins__
        var = 'a'
        while var in dir(__builtins__):
            var += random.choose(string.letters)

        # ...make a module that just contains that
        self.rewrite_file(var)

        try: __import__(self.module_name)
        except NameError: pass
        else: raise RuntimeError, 'Failed to induce NameError.'

        # ...now  change  the module  so  that  the NameError  doesn't
        # happen
        self.rewrite_file('%s = 1' % var)
        module = __import__(self.module_name).foo
        self.assertEqual(getattr(module, var), 1)

项目：ouroboros 作者：pybee | 项目源码 | 文件源码

def __init__(self, *args, **kw):
        self.package_name = 'PACKAGE_'
        while self.package_name in sys.modules:
            self.package_name += random.choose(string.ascii_letters)
        self.module_name = self.package_name + '.foo'
        unittest.TestCase.__init__(self, *args, **kw)

项目：ouroboros 作者：pybee | 项目源码 | 文件源码

def test_package_import__semantics(self):

        # Generate a couple of broken modules to try importing.

        # ...try loading the module when there's a SyntaxError
        self.rewrite_file('for')
        try: __import__(self.module_name)
        except SyntaxError: pass
        else: raise RuntimeError('Failed to induce SyntaxError') # self.fail()?
        self.assertNotIn(self.module_name, sys.modules)
        self.assertFalse(hasattr(sys.modules[self.package_name], 'foo'))

        # ...make up a variable name that isn't bound in __builtins__
        var = 'a'
        while var in dir(__builtins__):
            var += random.choose(string.ascii_letters)

        # ...make a module that just contains that
        self.rewrite_file(var)

        try: __import__(self.module_name)
        except NameError: pass
        else: raise RuntimeError('Failed to induce NameError.')

        # ...now  change  the module  so  that  the NameError  doesn't
        # happen
        self.rewrite_file('%s = 1' % var)
        module = __import__(self.module_name).foo
        self.assertEqual(getattr(module, var), 1)

项目：ndk-python 作者：gittor | 项目源码 | 文件源码

def __init__(self, *args, **kw):
        self.package_name = 'PACKAGE_'
        while self.package_name in sys.modules:
            self.package_name += random.choose(string.letters)
        self.module_name = self.package_name + '.foo'
        unittest.TestCase.__init__(self, *args, **kw)

项目：ndk-python 作者：gittor | 项目源码 | 文件源码

def test_package_import__semantics(self):

        # Generate a couple of broken modules to try importing.

        # ...try loading the module when there's a SyntaxError
        self.rewrite_file('for')
        try: __import__(self.module_name)
        except SyntaxError: pass
        else: raise RuntimeError, 'Failed to induce SyntaxError'
        self.assertNotIn(self.module_name, sys.modules)
        self.assertFalse(hasattr(sys.modules[self.package_name], 'foo'))

        # ...make up a variable name that isn't bound in __builtins__
        var = 'a'
        while var in dir(__builtins__):
            var += random.choose(string.letters)

        # ...make a module that just contains that
        self.rewrite_file(var)

        try: __import__(self.module_name)
        except NameError: pass
        else: raise RuntimeError, 'Failed to induce NameError.'

        # ...now  change  the module  so  that  the NameError  doesn't
        # happen
        self.rewrite_file('%s = 1' % var)
        module = __import__(self.module_name).foo
        self.assertEqual(getattr(module, var), 1)

项目：kbe_server 作者：xiaohaoppy | 项目源码 | 文件源码

def __init__(self, *args, **kw):
        self.package_name = 'PACKAGE_'
        while self.package_name in sys.modules:
            self.package_name += random.choose(string.ascii_letters)
        self.module_name = self.package_name + '.foo'
        unittest.TestCase.__init__(self, *args, **kw)

项目：kbe_server 作者：xiaohaoppy | 项目源码 | 文件源码

def test_package_import__semantics(self):

        # Generate a couple of broken modules to try importing.

        # ...try loading the module when there's a SyntaxError
        self.rewrite_file('for')
        try: __import__(self.module_name)
        except SyntaxError: pass
        else: raise RuntimeError('Failed to induce SyntaxError') # self.fail()?
        self.assertNotIn(self.module_name, sys.modules)
        self.assertFalse(hasattr(sys.modules[self.package_name], 'foo'))

        # ...make up a variable name that isn't bound in __builtins__
        var = 'a'
        while var in dir(__builtins__):
            var += random.choose(string.ascii_letters)

        # ...make a module that just contains that
        self.rewrite_file(var)

        try: __import__(self.module_name)
        except NameError: pass
        else: raise RuntimeError('Failed to induce NameError.')

        # ...now  change  the module  so  that  the NameError  doesn't
        # happen
        self.rewrite_file('%s = 1' % var)
        module = __import__(self.module_name).foo
        self.assertEqual(getattr(module, var), 1)