python - debug wrapper for external functions -

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i looking way simultaneously print , execute function/method in similar wrapping function. issue can not directly decorate function function calling part of jython module. have along lines

from jythonmodule import fun, obj  fun(a,b,c) o = obj o.method(e,f)

i looking away run , print code show

fun(a,b,c) o.method(e,f)

and execute commands. how without having access jython module? cheers

you can use sys.settrace:

# trace.py import sys   def trace_function(frame, event, arg):     if event == "call":  # report function calls         code_name = frame.f_code.co_name         code = frame.f_code         print "function call: {0} @ {1}:{2}".format(code.co_name, code.co_filename, code.co_firstlineno)         print "locals:", frame.f_locals         print     return trace_function  # continue tracing new scope    def f0(arg):     print "in f0: ", arg     print "done"  def f1(arg):     print "in f1: ", arg     f0(arg)  def f2(arg):     print "in f2: ", arg     f1(arg)   sys.settrace(trace_function)   f2("the arg string")

will give following output:

$ python trace.py: function call: f2 @ trace.py:23 locals: {'arg': 'the arg string'}  in f2:  arg string function call: f1 @ trace.py:19 locals: {'arg': 'the arg string'}  in f1:  arg string function call: f0 @ trace.py:15 locals: {'arg': 'the arg string'}  in f0:  arg string done function call: _remove @ /users/thomas/.virtualenvs/ec2vpn/lib/python2.7/_weakrefset.py:38 locals: {'item': <weakref @ 0x106743158; dead>, 'selfref': <weakref @ 0x1067956d8; 'weakset' @ 0x1067949d0>}  function call: _remove @ /users/thomas/.virtualenvs/ec2vpn/lib/python2.7/_weakrefset.py:38 locals: {'item': <weakref @ 0x1067430a8; dead>, 'selfref': <weakref @ 0x106743050; 'weakset' @ 0x106744e90>}

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