我需要按照包含以下格式的Temp5列对CSV文件进行排序。在我的具体情况下，Temp5列包含失败的值。
换句话说，它不包含任何值，仅出现Failed。
因此，我需要对Temp5中的值执行排序操作并忽略Failed值。
我可以编写新的csv文件或修改存在的文件。我在python中查看了csv，在linunx中查看了sort命令但是我找不到任何解决方案。
所以在new/Existing CSV File中，我有temp5排序值而不是Failed值（即没有丢失任何行和Failed值任何顺序）
努力： 我已经尝试过python代码，它建议我将字典和存储列作为键（你想要排序）和值使完整行比排序键和基于键重新检索数据。但我遇到了问题，它做了不包括失败的值。请找到我写入python的函数
csv_s_mt0 = csv.reader(open("data.csv","rb"))
s_mt0_map = {}
s_mt1_map = {}
line_escape = 0
for line in csv_s_mt0:
if(line_escape > 3):
print line
print line[4]
s_mt0_map[line[4]] = line
else:
line_escape = line_escape + 1
s_mt0_map_key = s_mt0_map.keys()
s_mt0_map_key.sort()
for key in s_mt0_map_key:
print s_mt0_map_key[key]
print len(s_mt0_map_key)
$Header Information
$Tool info=3
.TITLE '*****************************************************'
Temp1,Temp2,Temp3,Temp4,Temp5,Temp6,Temp6,Temp7,Temp8,Temp9
0., failed, failed,-2.700e-10, 9.803e-11,-2.725e-11, 2.725e-11,-1.645e-06, -40.0000,1
1.000e-12, failed, failed,-2.689e-10, 9.805e-11,-2.731e-11, 2.731e-11, 6.571e-08, -40.0000,1
2.000e-12, failed, failed,-2.679e-10, 9.806e-11,-2.731e-11, 2.731e-11, 6.835e-08, -40.0000,1
3.000e-12, failed, failed,-2.669e-10, 9.805e-11,-2.729e-11, 2.729e-11, 1.376e-07, -40.0000,1
4.000e-12, failed, failed,-2.660e-10, 9.803e-11,-2.731e-11, 2.731e-11, 3.583e-08, -40.0000,1
5.000e-12, failed, failed,-2.649e-10, 9.807e-11,-2.725e-11, 2.725e-11,-1.646e-06, -40.0000,1
6.000e-12, failed, failed,-2.640e-10, 9.803e-11,-2.731e-11, 2.731e-11, 3.579e-08, -40.0000,1
7.000e-12, failed, failed,-2.630e-10, 9.801e-11,-2.728e-11, 2.728e-11, 1.828e-07, -40.0000,1
8.000e-12, failed, failed,-2.620e-10, 9.805e-11,-2.729e-11, 2.729e-11, 1.353e-07, -40.0000,1
4.940e-10, failed, failed, 2.241e-10, failed, failed, failed, 0.8100, -40.0000,1
4.950e-10, failed, failed, 2.251e-10, failed, failed, failed, 0.8100, -40.0000,1
4.960e-10, failed, failed, 2.261e-10, failed, failed, failed, 0.8100, -40.0000,1
4.970e-10, failed, failed, 2.271e-10, failed, failed, failed, 0.8100, -40.0000,1
4.980e-10, failed, failed, 2.280e-10, failed, failed, failed, 0.8100, -40.0000,1
4.990e-10, failed, failed, 2.291e-10, failed, failed, failed, 0.8100, -40.0000,1
5.000e-10, failed, failed, 2.301e-10, failed, failed, failed, 0.8100, -40.0000,1
答案 0 :(得分：1)
key函数用于排序，它为所有float('inf')返回failed，因此它们都被放在列表的底部。同样，如果您希望它们全部位于顶部，您可以使用float('-inf')。
>>> import csv
>>> import sys # to print to sys.stdout for this example
>>> from itertools import islice
>>> def key(n):
return float(n) if n != 'failed' else float('inf')
>>> with open('data.csv') as f:
info = list(islice(f, 0, 3)) # first 3 lines
r = csv.DictReader(f)
w = csv.DictWriter(sys.stdout, r.fieldnames)
rows = sorted(r, key=lambda row: key(row['Temp5']))
sys.stdout.writelines(info)
w.writeheader()
w.writerows(rows)
$HeaderInformation
$Toolinfo=3
.TITLE'*****************************************************'
Temp1,Temp2,Temp3,Temp4,Temp5,Temp6,Temp6,Temp7,Temp8,Temp9
7.000e-12,failed,failed,-2.630e-10,9.801e-11,2.728e-11,2.728e-11,1.828e-07,-40.0000,1
0.,failed,failed,-2.700e-10,9.803e-11,2.725e-11,2.725e-11,-1.645e-06,-40.0000,1
4.000e-12,failed,failed,-2.660e-10,9.803e-11,2.731e-11,2.731e-11,3.583e-08,-40.0000,1
6.000e-12,failed,failed,-2.640e-10,9.803e-11,2.731e-11,2.731e-11,3.579e-08,-40.0000,1
1.000e-12,failed,failed,-2.689e-10,9.805e-11,2.731e-11,2.731e-11,6.571e-08,-40.0000,1
3.000e-12,failed,failed,-2.669e-10,9.805e-11,2.729e-11,2.729e-11,1.376e-07,-40.0000,1
8.000e-12,failed,failed,-2.620e-10,9.805e-11,2.729e-11,2.729e-11,1.353e-07,-40.0000,1
2.000e-12,failed,failed,-2.679e-10,9.806e-11,2.731e-11,2.731e-11,6.835e-08,-40.0000,1
5.000e-12,failed,failed,-2.649e-10,9.807e-11,2.725e-11,2.725e-11,-1.646e-06,-40.0000,1
4.940e-10,failed,failed,2.241e-10,failed,failed,failed,0.8100,-40.0000,1
4.950e-10,failed,failed,2.251e-10,failed,failed,failed,0.8100,-40.0000,1
4.960e-10,failed,failed,2.261e-10,failed,failed,failed,0.8100,-40.0000,1
4.970e-10,failed,failed,2.271e-10,failed,failed,failed,0.8100,-40.0000,1
4.980e-10,failed,failed,2.280e-10,failed,failed,failed,0.8100,-40.0000,1
4.990e-10,failed,failed,2.291e-10,failed,failed,failed,0.8100,-40.0000,1
5.000e-10,failed,failed,2.301e-10,failed,failed,failed,0.8100,-40.0000,1
答案 1 :(得分：0)
试试这个：
>>> c = list(csv.reader(s)) # here s is the file with the headers skipped
>>> final = []
>>> for row in c:
... row = map(lambda x: x.strip(), row)
... Temp5 = row[4]
... if Temp5 != 'failed':
... final.append(row)
>>> myprint.tabular(final) # just a pretty-printing function...
+ --------- + ------ + ------ + ---------- + --------- + ---------- + --------- + ---------- + -------- + ----- +
| Temp1 | Temp2 | Temp3 | Temp4 | Temp5 | Temp6 | Temp6 | Temp7 | Temp8 | Temp9 |
+ --------- + ------ + ------ + ---------- + --------- + ---------- + --------- + ---------- + -------- + ----- +
| 0. | failed | failed | -2.700e-10 | 9.803e-11 | -2.725e-11 | 2.725e-11 | -1.645e-06 | -40.0000 | 1 |
| 1.000e-12 | failed | failed | -2.689e-10 | 9.805e-11 | -2.731e-11 | 2.731e-11 | 6.571e-08 | -40.0000 | 1 |
| 2.000e-12 | failed | failed | -2.679e-10 | 9.806e-11 | -2.731e-11 | 2.731e-11 | 6.835e-08 | -40.0000 | 1 |
| 3.000e-12 | failed | failed | -2.669e-10 | 9.805e-11 | -2.729e-11 | 2.729e-11 | 1.376e-07 | -40.0000 | 1 |
| 4.000e-12 | failed | failed | -2.660e-10 | 9.803e-11 | -2.731e-11 | 2.731e-11 | 3.583e-08 | -40.0000 | 1 |
| 5.000e-12 | failed | failed | -2.649e-10 | 9.807e-11 | -2.725e-11 | 2.725e-11 | -1.646e-06 | -40.0000 | 1 |
| 6.000e-12 | failed | failed | -2.640e-10 | 9.803e-11 | -2.731e-11 | 2.731e-11 | 3.579e-08 | -40.0000 | 1 |
| 7.000e-12 | failed | failed | -2.630e-10 | 9.801e-11 | -2.728e-11 | 2.728e-11 | 1.828e-07 | -40.0000 | 1 |
| 8.000e-12 | failed | failed | -2.620e-10 | 9.805e-11 | -2.729e-11 | 2.729e-11 | 1.353e-07 | -40.0000 | 1 |
+ --------- + ------ + ------ + ---------- + --------- + ---------- + --------- + ---------- + -------- + ----- +