在python2.7中將列表堆疊到數組中

Question

我想解決如何將多個列表添加到數組中。以下是我想到的，但它不起作用。

import math 
import numpy as np 

myList1 = [1,2,'nan'] 
myList2 = [3,4,5] 

class myThing(object): 
    def __init__(self, myLists=[]): #This could accept 1 or many lists 
    self.__myVars = np.array(myLists, dtype=float) 
    self.__myVars.shape = (len(myLists),3) 
    self.__myVars = np.vstack(myVars) 

     @property 
    def myVars(self): 
     return self.__myVars 

foo = myThing(myList1,myList2) 
print foo.myVars 

blah blah... 
TypeError: __init__() takes at most 2 arguments (3 given) 

幫助理解

Answer 1

Use *myLists 中以允許__init__接受的參數的任意數量：

def __init__(self, *myLists): #This could accept 1 or many lists 

---

import numpy as np 

myList1 = [1,2,'nan'] 
myList2 = [3,4,5] 

class myThing(object): 
    def __init__(self, *myLists): #This could accept 1 or many lists 
     self.__myVars = np.array(myLists, dtype=float) 

    @property 
    def myVars(self): 
     return self.__myVars 

foo = myThing(myList1,myList2) 
print foo.myVars 

產量

[[ 1. 2. nan] 
[ 3. 4. 5.]] 

---

此外，在調試錯誤時，查看不止是異常本身是有用的。完整的追溯包括髮生異常的行：

---> 20 foo = myThing(myList1,myList2) 
    21 print foo.myVars 

TypeError: __init__() takes at most 2 arguments (3 given) 

這可以幫助我們瞭解導致問題的原因。

Answer 2

我想你的意思：

def __init__(self, *myLists): #This could accept 1 or many lists