python: dictionary (1)

Abstract: loop dictionary

The script:
# -*- coding: utf-8 -*-
"""
Created on Sat Aug  1 17:10:03 2015

@author: yuan
"""

d={'g':3, 'a':12,'b':2,'c':32,'d':120,'e':102,'f':112}

print 'method 1:'
for key in d:
    print key, d[key]

#faster than the method 1
print '\nmethod 2:'
for key in d.keys():
    print key, d[key]

print '\nmethod 3:both key and value'
for key,value in d.iteritems():
    print key, value

print '\nsorted loop:'
for key in sorted(d.keys()):
    print key, d[key]

#transpose dictionary: key to value, value to key
dd=dict(zip(d.values(),d.keys()))
print dd