Python和Java不同的地方

粗略看了下a byte of python，总结一下大致与java不同的地方：1、没有{}，全部使用：和缩进代替2、注释使用#3、doc使用"""或者"""4、变量类型比较简单，类似于js，不过定义更像vb或者groovy方法使用def来定义，只有整形，长整形，复数，浮点4种类型的数5、比java更是一切都是对象，连int也是6、输出更像是c7、数组，list，map比较像js8、有 this，改叫self了，而且还必须手动传，必须在第一个。。。9、构造叫init，回收叫del10、继承使用（），需要手动地调用父类的构造随便放段code

`01`	`class` `Person:`

`02`	`"""Represents a person."""`

`03`	`population` `=` `0`

`04`	`def` `__init__（self, name）:`

`05`	`"""Initializes the person"s data."""`

`06`	`self.name` `=` `name`

`07`	`print` `"（Initializing %s）"` `%` `self.name`

`08`	`# When this person is created, he/she`

`09`	`# adds to the population`

`10`	`Person.population` `+=` `1`

11

`12`	`def` `__del__（self）:`

`13`	`"""I am dying."""`

`14`	`print` `"%s says bye."` `%` `self.name`

`15`	`Person.population` `-=` `1`

`16`	`if` `Person.population` `==` `0:`

`17`	`print` `"I am the last one."`

18 else:

`19`	`print` `"There are still %d people left."` `%` `Person.population`

20

`21`	`def` `sayHi（self）:`

`22`	`"""Greeting by the person.`

`23`	`Really, that"s all it does."""`

`24`	`print` `"Hi, my name is %s."` `%` `self.name`

25

`26`	`def` `howMany（self）:`

`27`	`"""Prints the current population."""`

`28`	`if` `Person.population` `==` `1:`

`29`	`print` `"I am the only person here."`

30 else:

`31`	`print` `"We have %d persons here."` `%` `Person.population`