Python向方法中传递自定义类型参数

定义类型

class Fish:
    def __init__(self,x):
        self.num = x
class Turtle:
    def __init__(self,y):
        self.num = y
class Pool:
    def __init__(self,x,y):
        self.fish = Fish(x)
        self.turtle = Turtle(y)
    def print_num(self):
        print('fish %d,trutle %d'%(self.fish.num,self.turtle.num))
#pool = Pool(10,1)
#pool.print_num()

创建使用自定义类型的方法

import Animal as al
from Animal import Fish
def PrintTest(X):
    for colour in X:
        print(colour)
def PrintAnl(Fish): 
    print(Fish.num)

def PrintFish(fish=Fish):
    print(fish.num)

调用

import PrintTest as pt
import  Animal as anl
pt.PrintTest(['1','2'])
fish = anl.Fish(5)
pt.PrintAnl(fish)
pt.PrintFish(fish)
pool = anl.Pool(1,2)
pool.print_num()
拙见：向方法中传递自定类型参数时，格式：方法名(自定义类型,自定义类型) 或者 方法名(参数名=自定义类型,

参数名=自定义类型

)。传递内置类型时Python自动会判断类型