#############################################
##   PROGRAM: tdict.py
##   AUTHOR:  Chengan 20200526
##            douboer@gmail.com
##   test multi-key dict
#############################################

import re
from collections import defaultdict

t = {'a':{'b':{'c':1}}}
t['a']['b']['c']=2
t['a']=2
print(t)

t1 = {'a':{'b':{'c':'3'}}}
t2 = t1
print(t2)

t3 = {'b':{'c':'4'}}
t4 = defaultdict(dict)
t4['a'] = t3
print(t4)

t4['a1']['b2'] = {'c3':'5'}
print(t4)
t4['a1']['d2'] = {'c3':'6'}
print(t4)
t4['a1']['e2'] = {'c3':'7'}
print(t4)

t4['b1']['b2'] = {'b5':1}
print(t4)

t4['b1']['b2']['b3'] = {'b5':1}
print(t4)