好的,在我问之前,我已经看到了以下答案:
Python OrderedDict not keeping element order
Converting dict to OrderedDict
OrderedDict does not preserve the order
但我仍然无法做对。
背景:我有一个groundtruth文件,比如jp1_GT.txt(还有其他文件,在不同的路径,但目前我只关心一个文件)在某个路径上。在此文件中,每一行代表格式中的一个边界框。我正在改变一些计算,并打算将它们写在一个新的groundtruth文件中。
#Path containing old folders
src_path = r"C:\Users\username\Downloads\LITIV_dataset"
#dictionary creation
newgtdict ={}
for folderName in os.listdir(src_path):
folderPath = src_path + "\\" + folderName
if not os.path.isdir(folderPath):
continue
listOfFilePaths = glob.glob(folderPath + "\\"+ folderName +"_GT.txt")
for filePath in listOfFilePaths:
openedFile = open(filePath, 'r')
lines = openedFile.readlines()
linecount =0
for line in lines:
linecount+=1
linenumber = str(linecount)
my_list = str(line).split(",")
bboxes=[]
#checking for non-empty lines
if len(my_list)>0:
x_br = int(my_list[2])
y_br = int(my_list[3])
x_tl = int(my_list[0]) - (x_br/2)
y_tl = int(my_list[1]) - (y_br/2)
box = [x_tl,y_tl,x_br,y_br]
newgtdict[str(filePath)+str(linenumber)] = box
print newgtdict
我的jp1_GT.txt的前四行如下所示:
189,163,72,72
190,162,72,72
188,160,72,72
189,163,72,72
但是,前四行输出如下所示:
{'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt1': [153, 127, 72, 72]}
{'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt1': [153, 127, 72, 72], 'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt2': [154, 126, 72, 72]}
{'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt1': [153, 127, 72, 72], 'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt3': [152, 124, 72, 72], 'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt2': [154, 126, 72, 72]}
{'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt4': [153, 127, 72, 72], 'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt1': [153, 127, 72, 72], 'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt3': [152, 124, 72, 72], 'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt2': [154, 126, 72, 72]}
预计前4行输出:
{'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt1': [153, 127, 72, 72]}
{'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt2': [154, 126, 72, 72]}
{'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt3': [152, 124, 72, 72]}
{'C:\\Users\\username\\Downloads\\LITIV_dataset\\jp1\\jp1_GT.txt4': [153, 127, 72, 72]}
只是一个附带问题:你是否建议采用其他更好的方法。
答案 0 :(得分:3)
您在每次迭代时打印字典,而不是在每次迭代时将新项目打印到字典。
你可以这样做:
for line in lines:
# <snip>
newgtdict[str(filePath)+str(linenumber)] = box
print box
或
for line in lines:
# <snip>
newgtdict[str(filePath)+str(linenumber)] = box
# don't print here
for line in newgtdict:
print(line)
请注意您没有使用OrderedDict,您应该使用OrderedDict(如果您希望在早于3.7的Python版本中订购结果)
newgtdict = collections.OrderedDict()
# rather than = {}