- GRAMPS is a nice, open source (GPLd) program written in python that allows you to build up a database of family relationships, from which you can make genealogy trees
- GRAMPS runs on mac os, and they say it should run on windows and linux too
- It is very intuitive and easy to use
- I miss the ability to see descendant family trees with siblings etc (like this), but perhaps there is a trick to do that.
Python's context managers are a very neat way of handling code that needs a teardown once you are done. Python objects have do have a destructor method ( __del__ ) called right before the last instance of the object is about to be destroyed. You can do a teardown there. However there is a lot of fine print to the __del__ method. A cleaner way of doing tear-downs is through Python's context manager , manifested as the with keyword. class CrushMe: def __init__(self): self.f = open('test.txt', 'w') def foo(self, a, b): self.f.write(str(a - b)) def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.f.close() return True with CrushMe() as c: c.foo(2, 3) One thing that is important, and that got me just now, is error handling. I made the mistake of ignoring all those 'junk' arguments ( exc_type, exc_val, exc_tb ). I just skimmed the docs and what popped out is that you need to return True or...
Regarding point 4., http://www.gramps-project.org/wiki/index.php?title=DescendantsLines might be of interest.
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