def test_data():
# the SUAVE Data class...
data = Data()
# item-style assignment
data['key1'] = 'iterm1'
data['key2'] = 'borkaloo'
# attribute-style assignment
data.key3 = ['magic','majic','majik']
data.key4 = MyData()
# adding a branch
data.key5 = Data()
data.key5.key_a = 2
# index based access
print data[0]
print data.values()[0] # an equivalent syntax
print ""
# iteration, equivalent syntax
for i in range( len(data) ):
print data[i]
for value in data.values():
print value
for i,value in enumerate( data.values() ):
print value
print ""
# very pythonic key-value iteration (!!!)
for key,value in data.iteritems():
print key,": ",value
print ""
# check if data has a key
if data.has_key('key1'):
print 'i haz key1!'
print ""
# check if data is a certain type
if isinstance(data,MyData):
print "this won't print"
elif isinstance(data.key4,MyData):
print 'data.key4 is of type MyData!'
print ""
# an example of deep vs reference copy
refer = data
deep = deepcopy(data)
print data.key1
refer.key1 = 'new_value!!'
print data.key1
deep.key1 = "won't change data"
print data.key1
# the relevent case of the deepcopy example is when receiving input
# to a method. the input will be a reference copy, and if you don't
# want changes made to the data to propogate back to the referenced
# object, you must deepcopy it.
print ""
return
