What's a recursion ?

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def successors (tree, name) : best1 for key, value in tree.items () : if keyname: for i in range (0, len (value)) : best. append (value (i) if value (il in tree: for keyl, valuel in tree.items (): if keylvalue (il: for x in range (0, len (valuel)): best. append (valuel (x) if valuel (x in tree: for key2, value2 in tree.items () : if key2valuel (x : for z in range (0, len (value2)) : best. append (value2 (z) if value2 (z in tree: for key3, value in tree.items () : if key3value2 z : for fuck in range (0, len (value3)) : best.append (value3 fuck) return best