"""
 Using recursion to count.
"""

def count(n):
    if n <= 10:
        print n
        count(n+1)

count(1)

def loop(start, stop, function):
    if start <= stop:
        function(start)
        loop(start+1, stop, function)
    
def print_it(x):
    print x

loop(100, 110, print_it)


# An example of a tree as a fancy
# python data structure

tree = {'name':'start', 'kids': [
         {'name':'a1', 'kids':[
           {},
           {}
          ]},
         {'name':'a2', 'kids':[
          ]},
         {'name':'a3', 'kids':[
          ]}
        ]}

def count_nodes(tree):
    """Return how many nodes in tree total"