tom arnall wrote: > Bruno Desthuilliers wrote: > > > tom arnall a écrit : > >> does anyone know of a utility to do a recursive dump of object data > >> members? > >> > > > > What are "object data members" ? (hint: in Python, everything is an > > object - even functions and methods). > > > > What is your real use case ? > > something like: > > class A: > def __init__(self, p1): > self.p1 = p1 > > class B: > def __init__(self,p1, p2): > self.a = A(p1) > self.p2 = p2 > self.v1 = '3' > > class C: > def __init__(self): > self.b = B(3,4) > self.p3 = 5 > > class D: > def __init__(self): > self.v2=2 > self.o1 = C() > self.o2 = B(11,12) > > > d = D() > objectDataDumper(d) > > > would produce something like: > > object of class D with: > o1(C)->b(B)->a(A)->p1=3 > o1(C)->b(B)->p2=4 > o1(C)->b(B)->v1=3 > o1(C)->p3=5 > o2(B)->a(A)->p1=11 > o2(B)->p2=12 > o2(B)->v1=3 > v2=2 > > > tom arnall > north spit, ca > usa
At first I thought pickle would be what you're looking for, because that's exactly what it does; it dumps arbitrary objects, without choking on recursive references. Only problem is, it's not human readable (even in its ascii form).If you want it to be human readable, you may check the gnosis.xml.pickle module (http://cheeseshop.python.org/pypi/Gnosis_Utils/1.2.1-a). That's the output of gnosis.xml.pickle.XML_Pickler(d).dumps() on your example: <?xml version="1.0"?> <!DOCTYPE PyObject SYSTEM "PyObjects.dtd"> <PyObject module="__main__" class="D" id="-1210610740"> <attr name="v2" type="numeric" value="2" /> <attr name="o2" type="PyObject" id="-1211043316" module="__main__" class="B"> <attr name="a" type="PyObject" id="-1211043220" module="__main__" class="A"> <attr name="p1" type="numeric" value="11" /> </attr> <attr name="p2" type="numeric" value="12" /> <attr name="v1" type="string" value="3" /> </attr> <attr name="o1" type="PyObject" id="-1211199412" module="__main__" class="C"> <attr name="p3" type="numeric" value="5" /> <attr name="b" type="PyObject" id="-1211082644" module="__main__" class="B"> <attr name="a" type="PyObject" id="-1211067156" module="__main__" class="A"> <attr name="p1" type="numeric" value="3" /> </attr> <attr name="p2" type="numeric" value="4" /> <attr name="v1" type="string" value="3" /> </attr> </attr> </PyObject> I've also written a similar but less verbose xml dumper. The gnosis.xml package provides a bidirectional mapping between objects and xml (objects -> xml and xml->object) and therefore has to be precise; mine simply generates a nice xml dump of the object which isn't necessarily reversible. Here's the output for your example: <root type="__main__.D"> <o1 type="__main__.C"> <b type="__main__.B"> <a type="__main__.A"> <p1 type="int">3</p1> </a> <p2 type="int">4</p2> <v1 type="str">3</v1> </b> <p3 type="int">5</p3> </o1> <o2 type="__main__.B"> <a type="__main__.A"> <p1 type="int">11</p1> </a> <p2 type="int">12</p2> <v1 type="str">3</v1> </o2> <v2 type="int">2</v2> </root> If you find it suits you better, I'll try to make it available somewhere (probably in the cookbook). George -- http://mail.python.org/mailman/listinfo/python-list
