Collapse datamodel to one level deep
See also
Examples
>>> import spacepy.datamodel as dm
>>> import spacepy.toolbox as tb
>>> a = dm.SpaceData()
>>> a['1'] = dm.SpaceData(dog = 5, pig = dm.SpaceData(fish=dm.SpaceData(a='carp', b='perch')))
>>> a['4'] = dm.SpaceData(cat = 'kitty')
>>> a['5'] = 4
>>> a.tree()
+
|____1
|____dog
|____pig
|____fish
|____a
|____b
|____4
|____cat
|____5
>>> b = dm.flatten(a)
>>> b.tree()
+
|____1<--dog
|____1<--pig<--fish<--a
|____1<--pig<--fish<--b
|____4<--cat
|____5
>>> a.flatten()
>>> a.tree()
+
|____1<--dog
|____1<--pig<--fish<--a
|____1<--pig<--fish<--b
|____4<--cat
|____5