在 Jython 中使用 inspect.py 时出现问题

Question

我正在使用在 Jython 中开发的应用程序。当我尝试在其中使用 inspect.py 时，它会显示错误消息。

我的代码是这样的

import inspect,os,sys,pprint,imp
def handle_stackframe_without_leak(getframe):
    frame = inspect.currentframe()
    try:
        function = inspect.getframeinfo(getframe)
        print inspect.getargvalues(getframe)
    finally:
        del frame
#
def raja(a):
    handle_stackframe_without_leak(inspect.currentframe())
    print a
#
def callraja():
    handle_stackframe_without_leak(inspect.currentframe())
    raja("raja@ad.com")
#
callraja()
raja("raja@ad.com")
#

当我使用 python.exe 运行它时，没有问题。但是，在应用程序中使用它会引发以下错误

 File "C:\Program Files\jython221ondiffjava\Lib\inspect.py", line 722, in getframeinfo
 File "C:\Program Files\jython221ondiffjava\Lib\inspect.py", line 413, in findsource
 File "C:\Program Files\jython221ondiffjava\Lib\sre.py", line 179, in compile
 File "C:\Program Files\jython221ondiffjava\Lib\sre.py", line 227, in _compile
 File "C:\Program Files\jython221ondiffjava\Lib\sre_compile.py", line 437, in compile
 File "C:\Program Files\jython221ondiffjava\Lib\sre_compile.py", line 421, in _code
 File "C:\Program Files\jython221ondiffjava\Lib\sre_compile.py", line 143, in _compile
ValueError: ('unsupported operand type', 'branch')

    at org.python.core.Py.makeException(Unknown Source)
    at sre_compile$py._compile$1(C:\Program Files\jython221ondiffjava\Lib\sre_compile.py:143)
    at sre_compile$py.call_function(C:\Program Files\jython221ondiffjava\Lib\sre_compile.py)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
     at org.python.core.PyFunction.__call__(Unknown Source)
    at sre_compile$py._code$11(C:\Program Files\jython221ondiffjava\Lib\sre_compile.py:421)
    at sre_compile$py.call_function(C:\Program Files\jython221ondiffjava\Lib\sre_compile.py)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyFunction.__call__(Unknown Source)
    at sre_compile$py.compile$12(C:\Program Files\jython221ondiffjava\Lib\sre_compile.py:437)
    at sre_compile$py.call_function(C:\Program Files\jython221ondiffjava\Lib\sre_compile.py)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyFunction.__call__(Unknown Source)
    at org.python.core.PyObject.invoke(Unknown Source)
    at sre$py._compile$13(C:\Program Files\jython221ondiffjava\Lib\sre.py:227)
    at sre$py.call_function(C:\Program Files\jython221ondiffjava\Lib\sre.py)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyFunction.__call__(Unknown Source)
    at sre$py.compile$8(C:\Program Files\jython221ondiffjava\Lib\sre.py:179)
    at sre$py.call_function(C:\Program Files\jython221ondiffjava\Lib\sre.py)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyFunction.__call__(Unknown Source)
    at org.python.core.PyObject.invoke(Unknown Source)
    at inspect$py.findsource$24(C:\Program Files\jython221ondiffjava\Lib\inspect.py:413)
    at inspect$py.call_function(C:\Program Files\jython221ondiffjava\Lib\inspect.py)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyFunction.__call__(Unknown Source)
    at inspect$py.getframeinfo$54(C:\Program Files\jython221ondiffjava\Lib\inspect.py:722)
    at inspect$py.call_function(C:\Program Files\jython221ondiffjava\Lib\inspect.py)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyFunction.__call__(Unknown Source)
    at org.python.core.PyObject.invoke(Unknown Source)
    at custom$py.handle_stackframe_without_leak$4(C:\Program Files\<my app>\jars\custom.py:29)
    at custom$py.call_function(C:\Program Files\<my app>\.\jars\custom.py)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyFunction.__call__(Unknown Source)
    at definitions$py.gotonotificationprofile$122(C:\Program Files\<my app>\.\jars\definitions.py:1738)
    at definitions$py.call_function(C:\Program Files\<my app>\.\jars\definitions.py)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyFunction.__call__(Unknown Source)
    at notificationcases$py.A003$2(C:\Program Files\<my app>\.\jars\notificationcases.py:143)
    at notificationcases$py.call_function(C:\Program Files\<my app>\.\jars\notificationcases.py)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyFunction.__call__(Unknown Source)
    at org.python.pycode._pyx171.f$0(003:8)
    at org.python.pycode._pyx171.call_function(003)
    at org.python.core.PyTableCode.call(Unknown Source)
    at org.python.core.PyCode.call(Unknown Source)
    at org.python.core.Py.runCode(Unknown Source)
    at org.python.util.PythonInterpreter.execfile(Unknown Source)

任何帮助将不胜感激。

谢谢 拉贾桑卡尔

Answer 1

这可能对http://grinder.sourceforge.net/faq.html#re-problems 有所帮助。

为了快速检查，请尝试在 findsource 方法中添加 import re (C:\Program Files\jython221ondiffjava\Lib\inspect.py)

def findsource(object):
    """Return the entire source file and starting line number for an object.
    (...snip...)"""
    import re
    file = getsourcefile(object) or getfile(object)

虽然不能保证什么...

Answer 2

您是否尝试过使用 Jython 在命令行上运行您的程序（在应用程序之外）？当我使用 Jython 2.2.1 或 Jython 2.5.0 运行您的程序时，我会得到与 Python 相同的输出。