'''
    Purpose: introduction to dictionary'
'''

mappings = {}    # dictionary are denoted by {} - for now, it's empty
mappings[ 0 ] = 'even'   # { 0 : 'even' }
mappings[ 1 ] = 'odd'    # { 0 : 'even', 1 : 'odd' }
mappings[ 2 ] = 'even'   # { 0 : 'even', 1 : 'odd', 2 : 'even' }
mappings[ 3 ] = 'odd'    # so on
mappings[ 4 ] = 'even'   # but the order is sort of random, we don't know what the order is
mappings[ 5 ] = 'odd'
mappings[ 6 ] = 'even' 
mappings[ 7 ] = 'odd' 
mappings[ 8 ] = 'even' 
mappings[ 9 ] = 'odd' 
mappings[ 'even' ] = 'a number is even if its remainder divided by 2 is 0'
mappings[ 'odd' ] = 'a number is odd if its remainder divided by 2 is 1'


reply = input( 'Enter a number: ' )
n = int( reply )

status = mappings[ n ]   # get the value at the key n

print( n, status )

reply = input( 'Enter even or odd: ' )

meaning = mappings[ reply ]  # get the value for the key reply where reply is the string 'even' or 'odd'

print( meaning )