with open('LBP_for_paper.csv','r') as csvDataFile:
datarows = csv.reader(csvDataFile, delimiter=',', quotechar='|')
nofinding=[]
rawrow=[]
for row in datarows:
if row[1]=='No Finding' and row[2]=='1':
rawrow = list((row[0]+","+row[1]+","+row[2]+","+row[17]+","+row[18]))
nofinding.append(rawrow)
print(nofinding[:2])
我正在从csv文件中读取数据行,并希望基于某些列创建自定义嵌套列表。我要那个
列表((行[0] + “ ”+行[1] +“, ”+行[2] +“, ”+行[17] +“,” +行[18]))
应该返回一个列表
['00030805_000.png,No Finding,1,34777,69373']
它存储在rawrow中,然后附加到一个更大的列表,即nofinding但我得到输出为
[['0','0','0','3','0','8','0','5','','0','0','0',' 。','p','n','g',',','N','o','','F','i','n','d','i', 'n','g',',','1',',','3','4','7','7','7',',','6','9 ','3','7','3'],['0','0','0','3','0','8','0','4','' ,'0','0','0','。','p','n','g',',','N','o','','F','i ','n','d','i','n','g',',','1',',','3','5','4','0', '5',',','6','3','0','8','8']]
期望的输出
[['00030805_000.png,No Finding,1,34777,69373'],['00030804_000.png,No Finding,1,35405,63088']]
谢谢
您的问题是rawrow = list((row[0]+","+row[1]+","+row[2]+","+row[17]+","+row[18]))
正在将字符串转换为字符列表
如果你想把它留作逗号分隔的字符串,用以下内容替换该行:
rawrow = row[0]+","+row[1]+","+row[2]+","+row[17]+","+row[18]
或者更干净:
rawrow = ",".join([row[row_index] for row_index in [0, 1, 2, 17, 18]])
我很好奇你为什么要这样做:
[ ['00030805_000.png,No Finding,1,34777,69373'], ['00030804_000.png,No Finding,1,35405,63088'] ]
而不是这个:
[ ['00030805_000.png','No Finding',1,34777,69373], ['00030804_000.png','No Finding',1,35405,63088] ]
您可以通过以下方式实现:
rawrow = []
for row_index in [0, 1, 2, 17, 18]:
rawrow.append(row[row_index].split(","))
或者在一行中:
rawrow = [row[row_index].split(",") for row_index in [0, 1, 2, 17, 18]]
此外,您的整个代码可以合并如下:
with open('LBP_for_paper.csv','r') as csvDataFile:
datarows = csv.reader(csvDataFile, delimiter=',', quotechar='|')
nofinding = [",".join([row[row_index] for row_index in [0, 1, 2, 17, 18]]) for row in datarows if row[1]=='No Finding' and row[2]=='1']
print(nofinding[:2])
with open('LBP_for_paper.csv','r') as csvDataFile:
datarows = csv.reader(csvDataFile, delimiter=',', quotechar='|')
rawrow = []
nofindings=[]
for row in datarows:
if row[1]=='No Finding' and row[2]=='1':
rawrow = [''.join(row[row_index]) for row_index in [0, 1, 2, 17, 18] ]
nofindings.append(rawrow)
print(nofindings[:3])
解决了我的问题。