编辑代码

dict1 = {'k1': 'v1', 'k2': 'v2', 'k3': 'v3'}
print(dict1)

for k in dict1:
    print(k)

for v in dict1.values():
    print(v)

for k, v in dict1.items():
    print(k, v)

dict1['k4'] = 'v4'
print('dict1=', dict1)

del dict1['k1']
print(dict1)

if 'k5' in dict1:
    del dict1['k5']
else:
    print(dict1.get('k5'))

print(dict1["k2"])

print['k6'] = dict1.get('k6')
print(dict1['k6'])