#!/usr/bin/env python
# coding: utf-8
from list import LinkedList
userInputExpression = None
userInputCel = None
a = LinkedList()
b = LinkedList()
a.addFirst({
'label': 'a1',
'value': '5'
})
'''
while(True):
userInputCel = raw_input('Where do you want insert? \n')
userInputExpression = raw_input('Enter a math expression: \n')
result = None
if userInputCel[0].lower() == 'a':
print 'A cedule'
result = a.find({'label': userInputCel})
if result == None:
print 'not'
else:
print result.get_data()
elif userInputCel[0].lower() == 'b':
