Python\u9762\u5411\u5bf9\u8c61\u7684\u6a21\u5f0f<\/h1>\n
Python\u9762\u5411\u5bf9\u8c61\u7684\u6a21\u5f0f\u8be6\u7ec6\u64cd\u4f5c\u6559\u7a0b<\/span>\n <\/div>\n
\n \u9762\u5411\u5bf9\u8c61\u7684\u6a21\u5f0f\u662f\u6700\u5e38\u7528\u7684\u6a21\u5f0f\u3002\u8fd9\u79cd\u6a21\u5f0f\u51e0\u4e4e\u53ef\u4ee5\u5728\u6bcf\u79cd\u7f16\u7a0b\u8bed\u8a00\u4e2d\u627e\u5230\u3002\n <\/div>\n
\u5982\u4f55\u5b9e\u73b0\u9762\u5411\u5bf9\u8c61\u7684\u6a21\u5f0f\uff1f<\/h2>\n
\n \u73b0\u5728\u8ba9\u6211\u4eec\u770b\u770b\u5982\u4f55\u5b9e\u73b0\u9762\u5411\u5bf9\u8c61\u7684\u6a21\u5f0f\u3002\n <\/div>\n
 # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
 class <\/span>Parrot:
    # class <\/span>attribute
<\/span>    species = \"bird\"<\/span>
 
    # instance attribute
<\/span>    def <\/span>__init__(self, name, age):
       self.name = name
       self.age = age
 
 # instantiate the Parrot class
<\/span> blu = Parrot(\"Blu\"<\/span>, 10)
 woo = Parrot(\"Woo\"<\/span>, 15)
 # access the class <\/span>attributes
<\/span> print(\"Blu is <\/span>a {}\"<\/span>.format<\/span>(blu.__class__.species))
 print(\"Woo is <\/span>also a {}\"<\/span>.format<\/span>(woo.__class__.species))
 # access the instance attributes
<\/span> print(\"{} is <\/span>{} years old\"<\/span><\/span>.format<\/span>( blu.name, blu.age))
 print(\"{} is <\/span>{} years old\".format<\/span>( woo.name, woo.age))
 <\/span><\/code><\/pre>\n<\/p><\/div>\n\u8f93\u51fa<\/h3>\n\n    \u4e0a\u9762\u7684\u7a0b\u5e8f\u751f\u6210\u4ee5\u4e0b\u8f93\u51fa\n  <\/div>\n\n # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
Blu is <\/span>a bird
 Woo is <\/span>also a bird
 Blu is <\/span>10 years old
 Woo is <\/span>15 years old
 <\/span><\/code><\/pre>\n<\/p><\/div>\n\u8bf4\u660e<\/h3>\n\n    \u8be5\u4ee3\u7801\u5305\u62ec\u7c7b\u5c5e\u6027\u548c\u5b9e\u4f8b\u5c5e\u6027\uff0c\u5b83\u4eec\u6839\u636e\u8f93\u51fa\u7684\u8981\u6c42\u8fdb\u884c\u6253\u5370\u3002\u6709\u591a\u79cd\u529f\u80fd\u6784\u6210\u9762\u5411\u5bf9\u8c61\u6a21\u5f0f\u7684\u4e00\u90e8\u5206\u3002
\n   
\u4e0b\u9762\u91cd\u70b9\u4ecb\u7ecd\u4f7f\u7528\u9762\u5411\u5bf9\u8c61\u7684\u6982\u5ff5\u53ca\u5176\u5728Python\u4e2d\u7684\u5b9e\u73b0\u7684\u6a21\u5f0f\u3002\u5f53\u6211\u4eec\u56f4\u7ed5\u8bed\u53e5\u5757\u8bbe\u8ba1\u7a0b\u5e8f\u65f6\uff0c\u8fd9\u4e9b\u8bed\u53e5\u5757\u56f4\u7ed5\u51fd\u6570\u64cd\u4f5c\u6570\u636e\uff0c\u8fd9\u79f0\u4e3a\u9762\u5411\u8fc7\u7a0b\u7684\u7a0b\u5e8f\u8bbe\u8ba1\u3002\u5728\u9762\u5411\u5bf9\u8c61\u7684\u7f16\u7a0b\u4e2d\uff0c\u6709\u4e24\u4e2a\u4e3b\u8981\u7684\u5b9e\u4f8b\uff0c\u5206\u522b\u79f0\u4e3a\u7c7b\u548c\u5bf9\u8c61\u3002\n  <\/div>\n\u5982\u4f55\u5b9e\u73b0\u7c7b\u548c\u5bf9\u8c61\u53d8\u91cf\uff1f<\/h2>\n\n # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
class <\/span>Robot:
     population = 0
     def <\/span>__init__(self, name):
         self.name = name
         print(\"(Initializing {})\"<\/span>.format<\/span>(self.name))
         Robot.population += 1
     def <\/span>die(self):
         print(\"{} is <\/span>being destroyed!\"<\/span>.format<\/span>(self.name))
         Robot.population -= 1
         if <\/span>Robot.population == 0:
             print(\"{} was the last one.\"<\/span>.format<\/span>(self.name))
         else:<\/span>
             print(\"There are still {:d} robots working.\"<\/span>.format<\/span>(
                 Robot.population))
     def <\/span>say_hi(self):
         print(\"Greetings, my masters call me {}.\"<\/span>.format<\/span>(self.name))
     @classmethod
     def <\/span>how_many(cls):
         print(\"We have {:d} robots.\"<\/span>.format<\/span>(cls.population))
 droid1 = Robot(\"R2-D2\"<\/span>)
 droid1.say_hi<\/span>()
 Robot.how_many<\/span>()
 droid2 = Robot(\"C-3PO\"<\/span>)
 droid2.say_hi<\/span>()
 Robot.how_many<\/span>()
 print(\"\\nRobots can do some work here.\\n\"<\/span>)
 print(\"Robots have finished their work. So let'<\/span>s destroy them.\")
 droid1.die<\/span>()
 droid2.die<\/span>()
 Robot.how_many<\/span>()
 <\/span><\/code><\/pre>\n<\/p><\/div>\n\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n
\n # Filename : example.py<\/span>
# Copyright : 2020 By Bianchenghao6<\/span>
# Author by : bianchenghao6.com<\/span>
# Date : 2020-08-22<\/span>
(Initializing R2-D2)
 Greetings, my masters call me R2-D2.
 We have 1 robots.
 (Initializing C-3PO)
 Greetings, my masters call me C-3PO.
 We have 2 robots.
 Robots can do some work here.
 Robots have finished their work. So let's destroy them.
 R2-D2 is <\/span>being destroyed!
 There are still 1 robots working.
 C-3PO is <\/span>being destroyed!
 C-3PO was the last one.
 We have 0 robots.
 <\/span><\/code><\/pre>\n<\/p><\/div>\n\u8bf4\u660e\uff1a\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u603b\u4f53\u7c7b\u53d8\u91cf\u79f0\u4e3aRobot.population\uff0c\u800c\u4e0d\u662fself.population\u3002<\/p>\n
 <\/body>
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