Cherrypy无法找到wsgiserver模块当包装在cannot冷冻

Question

我正在部署一个cherrypy应用程序，将其打包到一组带有cx_freeze的可执行文件中。

我使用python 3(通过CentOS中的scl )。为了编译二进制文件，我运行：

scl enable python33 -- cxfreeze server.py

其中server.py是条目脚本。

当我执行生成的文件时，服务器启动并立即停止，出现错误：

Traceback (most recent call last):
  File "/opt/rh/python33/root/usr/lib/python3.3/site-packages/cherrypy/process/wspbus.py", line 205, in publish
    output.append(listener(*args, **kwargs))
  File "/opt/rh/python33/root/usr/lib/python3.3/site-packages/cherrypy/_cpserver.py", line 167, in start
    self.httpserver, self.bind_addr = self.httpserver_from_self()
  File "/opt/rh/python33/root/usr/lib/python3.3/site-packages/cherrypy/_cpserver.py", line 157, in httpserver_from_self
    from cherrypy import _cpwsgi_server
  File "/opt/rh/python33/root/usr/lib64/python3.3/importlib/_bootstrap.py", line 1616, in _handle_fromlist
    _call_with_frames_removed(import_, from_name)
  File "/opt/rh/python33/root/usr/lib64/python3.3/importlib/_bootstrap.py", line 313, in _call_with_frames_removed
    return f(*args, **kwds)
  File "/opt/rh/python33/root/usr/lib64/python3.3/importlib/_bootstrap.py", line 1567, in _find_and_load
    return _find_and_load_unlocked(name, import_)
  File "/opt/rh/python33/root/usr/lib64/python3.3/importlib/_bootstrap.py", line 1534, in _find_and_load_unlocked
    loader.load_module(name)
  File "/opt/rh/python33/root/usr/lib/python3.3/site-packages/cherrypy/_cpwsgi_server.py", line 7, in <module>
    from cherrypy import wsgiserver
  File "/opt/rh/python33/root/usr/lib64/python3.3/importlib/_bootstrap.py", line 1616, in _handle_fromlist
    _call_with_frames_removed(import_, from_name)
  File "/opt/rh/python33/root/usr/lib64/python3.3/importlib/_bootstrap.py", line 313, in _call_with_frames_removed
    return f(*args, **kwds)
  File "/opt/rh/python33/root/usr/lib64/python3.3/importlib/_bootstrap.py", line 1567, in _find_and_load
    return _find_and_load_unlocked(name, import_)
  File "/opt/rh/python33/root/usr/lib64/python3.3/importlib/_bootstrap.py", line 1534, in _find_and_load_unlocked
    loader.load_module(name)
  File "/opt/rh/python33/root/usr/lib/python3.3/site-packages/cherrypy/wsgiserver/__init__.py", line 14, in <module>
    exec('from .wsgiserver3 import *')
  File "<string>", line 1, in <module>
  File "/opt/rh/python33/root/usr/lib64/python3.3/importlib/_bootstrap.py", line 1567, in _find_and_load
    return _find_and_load_unlocked(name, import_)
  File "/opt/rh/python33/root/usr/lib64/python3.3/importlib/_bootstrap.py", line 1531, in _find_and_load_unlocked
    raise exc
ImportError: No module named 'cherrypy.wsgiserver.wsgiserver3'

在其余部分中，cx冻结脚本输出包含以下一行：

Missing modules:
[...]
? wsgiserver2 imported from cherrypy.wsgiserver
[...]
This is not necessarily a problem - the modules may not be needed on this platform.

在/opt/rh/python33/root/usr/lib/python3.3/site-packages/cherrypy/wsgiserver/__init__.py中，我可以看到：

import sys
if sys.version_info < (3, 0):
    from wsgiserver2 import *
else:
    # Le sigh. Boo for backward-incompatible syntax.
    exec('from .wsgiserver3 import *')

我想知道为什么wsgiserver没有正确地进口。

我还试图将wsgiserver3模块显式地包含在setup.py中：

buildOptions = {
    'packages' : ['cherrypy'],
    'includes' : ['cherrypy.wsgiserver.wsgiserver3'],
    'excludes' : [],
    'path' : sys.path,
}

import sys
base = 'Win32Service' if sys.platform=='win32' else None

executables = [
    Executable('server.py', base=base, targetName = 'myapp')
]

setup(name='Myapp',
      version = '1.0beta1',
      description = 'My App',
      options = dict(build_exe = buildOptions),
      executables = executables)

有什么暗示吗？

谢谢,

通用汽车

Answer 1

这个问题包括了答案。一定是在做某种依赖分析。我不知道具体的方法是什么，例如，它可以是一个AST遍历，但是它正在做的是查找import，当一个库做了像exec('from .wsgiserver3 import *')这样的动态导入时，不会识别它。因此，您需要在cx冻结配置中显式列出这些模块。我看到配置选项调用--include-modules。

顺便说一句，出于同样的原因，动态导入CherryPy 3.5 (据我所知)车轮分布缺乏相同的wsgiserver3模块。

更新

以下是distutils commands文档部分的引文

若要在脚本中指定选项，请在名称中使用下划线。例如： 安装程序(options= {'build_exe'：{‘init_script’：‘Console’}) 若要在命令行中指定相同的选项，请使用破折号，如下所示： python setup.py build_exe -init-脚本控制台

更新2

好的，我临时安装了cx_freeze (没那么快，只是在这句话的帮助下)，自己做了测试。

app.py

#!/usr/bin/env python3


import cherrypy


class App:

  @cherrypy.expose
  def index(self):
    return 'Hello world!'


if __name__ == '__main__':
  cherrypy.quickstart(App(), '/')

setup.py

import sys

from cx_Freeze import setup, Executable


options = {
  'build_exe' : {
    'includes' : 'cherrypy.wsgiserver.wsgiserver3'
  }
}
executables = [Executable('app.py')]

setup(
  name        = 'CherryPyApp',
  version     = '0.1',
  description = 'Testing CherryPy wsgiserver3 dynamic import',
  options     = options,
  executables = executables
)

它确实适用于{'includes': 'cherrypy.wsgiserver.wsgiserver3'}，没有它也不行，ImportError("No module named 'cherrypy.wsgiserver.wsgiserver3'",)。