編輯：如何在Python中聲明結構數組

Question

編輯全部

import struct
from collections import namedtuple

FDResult = namedtuple('FDResult', ['DeviceID', 'PageNum'])
#bla = [FDResult(DeviceID='NR0951113', PageNum=[1,2,3,4]),
 #FDResult(DeviceID='NR0951114', PageNum=[17,28,63,64]),
 #FDResult(DeviceID='NR0951115', PageNum=[2,3,4,5])]

bla = [FDResult(DeviceID='NR0951115', PageNum=[1])] #how to declare bla as FDResult array and blank data inside,Length of bla should equal 0
bla.append(FDResult(DeviceID='NR0951112', PageNum=[2])) 
print(len(bla))

bla[0].PageNum.append(16)

如何在Python中聲明結構數組？
FDResult數組和內部空白數據，bla的長度應等於0

回答

FDResult = namedtuple('FDResult', ['DeviceID', 'PageNum'])
#bla = [FDResult(DeviceID='NR0951113', PageNum=[1,2,3,4]),
 #FDResult(DeviceID='NR0951114', PageNum=[17,28,63,64]),
 #FDResult(DeviceID='NR0951115', PageNum=[2,3,4,5])]
NodeList = []

Node = FDResult(DeviceID='NR0951113', PageNum=[1,2,3,4])
NodeList.append(Node)
print(len(NodeList))
NodeList[0].PageNum.append(16)

Answer 1

您可以像這樣創建namedtuple數組。

from collections import namedtuple

MyStruct = namedtuple('MyStruct', 'Mark nPackLen nFlag nGisIp nPort sData sEnd')

NodeList = []
Node = MyStruct(None, '', '', '', '',  -1, 0)
for id in range(4):
     NodeList.append(Node)

Answer 2

如果bla長度應為零，則只需創建一個空列表：

bla = []

Python列表可以包含任何類型的對象。 如果bla僅應保留FDResult實例，則作為程序員的職責是不要在其中放置任何其他內容。