crass

# Example Invocation:
#
#    gcc test.c -o test -g
#    TRACE_FUNCTIONS=fib TRACE_FILE=log gdb -x gdb_trace.py test
#    cat log
#
#  Log File Format:
#
#    ('call', Parent Call ID, Call ID, Breakpoint Name, Symbol Name, Arguments)
#    ('return', Call Id, Breakpoint Name, Return Value)

crass

>>> class A(object):
...     blah = []
...     def hmm(self):
...         self.blah.append("hmm")
... 
>>> test = A()
>>> test.hmm()
>>> test.blah
['hmm']
>>> test2 = A()