#good
ages=dict(Dave=24,Mary=42,John=58)
print(ages.get('Dave'))
#not good
ages={'Dave':24,'Mary':42,'John':58}
print(ages['Dave'])
#good
ages=dict(Dave=24,Mary=42,John=58)
print(ages.get('Dave'))
#not good
ages={'Dave':24,'Mary':42,'John':58}
print(ages['Dave'])
本文标题：[Python]优雅的dictionary使用
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