Python练习-- dict and set

#!/usr/bin/env python3
# -*- coding: utf-8 -*-


d = {'Michael': 95,'Bob': 75,'Tracy': 85}
print(d['Bob'])

d['Adam'] = 67
print(d)

print('Thomas in d?? %s' % ('Thomas' in d))
print('d.get(\'Thomas\'): %s' % d.get('Thomas'))


print(d.pop('Bob'))
print(d)

# =========== set =====================
print("=========== set =====================")
s = set([1, 2, 3])
print('s :',s)
s.add(4)
print(s)

s1=set([1,2,3])
s2=set([2,3,4])
print('s1 :',s1)
print('s2 :',s2)
print('s1 & s2 :',s1 & s2)
print('s1 | s2 :',s1 | s2)