[英]Python for loop matching list items at different indexes
我的數據結構如下:
data=
[
(120,150,150,160,"word1"),
(152,150,170,160,"word2"),
(172,150,200,160,"word3"),
(202,290,240,300,"word4"),
(300,150,350,160,"word5"),
(202,200,240,210,"word6"),
(242,200,260,210,"word7")
]
我想返回數據中當前列表的第 3 個數字與下一個項目的第一個數字之間的差異小於 5 並且當前列表項目的第 4 個數字與第 4 個數字之間的差異小於 5 的任何單詞2 在一個數組中。 然后我想 append 所有那些 arrays 到主列表。
所以這將是 function 應用於數據的結果:
final=
[[
(120,150,150,160,"word1"),
(152,150,170,160,"word2"),
(172,150,200,160,"word3")
],
[
(202,200,240,210,"word6"),
(242,200,260,210,"word7")
]]
word4不包括在內,因為data[2][3]-data[3][3]>2
word5不包括在內,因為data[3][2]-data[4][0]>2
我目前的嘗試正確處理了 90% 的單詞,但有時會組合不符合要求的單詞:
temp=[]
final=[]
for i,j in enumerate(data[:-1]):
if(j[2]-data[i+1][0]<5) and (j[3]-data[i+1][3]<2):
if len(temp)<1:
temp.append(j[0:4])
temp.append(data[i+1][0:4])
else:
final.append(temp)
temp=[]
if temp:
final.append(temp)
編輯:這是上述算法失敗的真實示例:
data=
[
(38.0, 296.7943420410156, 90.86400604248047, 310.7943420410156, 'Contract'),(94.7560043334961, 296.7943420410156, 154.6480102, 310.7943420, 'Summary'),
(250.64453125, 317.38818359375, 266.743530, 325.88818359375, 'This')
]
預計 output:
final=
[[
(38.0, 296.7943420410156, 90.86400604248047, 310.7943420410156, 'Contract'),(94.7560043334961, 296.7943420410156, 154.6480102, 310.7943420, 'Summary')
]]
實際 output:
final=
[[
(38.0, 296.7943420410156, 90.86400604248047, 310.7943420410156, 'Contract'),(94.7560043334961, 296.7943420410156, 154.6480102, 310.7943420, 'Summary'),
(250.64453125, 317.38818359375, 266.743530, 325.88818359375, 'This')
]]
您需要比較數字並添加abs
,因為差異可能是負數。 我還稍微美化了您的代碼:
data = [
(38.0, 296.7943420410156, 90.86400604248047, 310.7943420410156, 'Contract'),
(94.7560043334961, 296.7943420410156, 154.6480102, 310.7943420, 'Summary'),
(250.64453125, 317.38818359375, 266.743530, 325.88818359375, 'This')
]
temp = []
final = []
for index, item in enumerate(data[:-1]):
if abs(item[2] - data[index + 1][0]) < 5 and abs(item[3] - data[index + 1][3]) < 2:
if len(temp) < 1:
temp.append(item[0:4])
temp.append(data[index + 1][0:4])
else:
final.append(temp)
temp = []
if temp:
final.append(temp)
print(final)
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