Python基础三：函数和类

 1 def fun(x):
 2     if x > 0:
 3         print "x>0"
 4     else:
 5         print "x<=0"
 6  
 7 a = 3.5
 8 b = -1
 9 fun(a)
10 fun(b)

 1 class Student:
 2     def __init__(self, name, age):
 3         self.name = name
 4         self.age = age
 5  
 6     def studying(self):
 7         print self.name, "is studying"
 8  
 9     def playing(self, something):
10         print self.name, "is playing", something
11  
12     def info(self):
13         print "Info:", "\n",14                "Name:", self.name, "\n",15               "Age:", self.age
16  
17 studentA = Student("studentA", 16)
18 studentA.studying()
19 studentA.playing("football")
20 studentA.info()

 1 class A:
 2     def __init__(self):
 3         print "A is a parent class"
 4  
 5     def funA(self):
 6         print "funA is in class A"
 7  
 8 class subA(A):
 9     def __init__(self):
10         print "subA is a child class"
11  
12     def funsubA(self):
13         print "funsubA is in class subA"
14  
15 parentA = A()
16 childA = subA()
17 childA.funA()
18 childA.funsubA()