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[英]Mapping values of 2 python dictionaries into 1 new list of dictionaries
[英]Editing Values in the List of Dictionaries in Python
我在 python 中有一个词典列表。该词典包含我需要为所有词典更新的“sequenceId”,以确保每个 sequenceId 是偶数且不可重复的。 为了更新 sequenceIds,我使用了 for 循环,但行为不是我所期望的。
seqId = 0
for index in range(20):
FinalNodes[index]['sequenceId'] = seqId
seqId +=2
print(FinalNodes[7]['sequenceId'])
预期 Output:- 14
观察到 Output:- 38
这是完整的代码片段
import json
import time
with open('test.json', "r") as json_file:
data = json.load(json_file)
numberofJobs = 10
NodesList = data['nodes']
nNodes = len(NodesList)
#Divide all node into first, main and last
MainNodes = NodesList[1:nNodes-1]
FirstNode = NodesList[0:1]
LastNode = NodesList[nNodes-1:nNodes]
#prepare final nodes
FinalNodes = FirstNode.copy()
for i in range(numberofJobs):
FinalNodes.extend(MainNodes)
FinalNodes.extend(LastNode)
print(FinalNodes[7]['sequenceId'])
seqId = 0
for index in range(0,20):
FinalNodes[index]['sequenceId'] = seqId
seqId +=2
print(FinalNodes[index]['sequenceId'],index)
print(FinalNodes[7]['sequenceId'])
Output 循环内:-
0 0
2 1
4 2
6 3
8 4
10 5
12 6
14 7
16 8
18 9
20 10
22 11
24 12
26 13
28 14
30 15
32 16
34 17
36 18
38 19
请检查你的FinalNodes
字典,因为我运行了相同的代码并且它工作正常!
FinalNodes= []
for i in range(20):
FinalNodes.append({"sequenceId":0})
seqId = 0
for index in range(8):
FinalNodes[index]['sequenceId'] = seqId
seqId +=2
print(FinalNodes[7]['sequenceId']) #14
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