用python给csv里的数据排序的具体代码

#coding:utf-8
importre
importargparse
importpandasaspd
parser=argparse.ArgumentParser(description='manualtothisscript')
parser.add_argument('--ip',type=str,default=None)
parser.add_argument('--type',type=str,default=None)
args=parser.parse_args()
filterStr=args.ip+""+args.type
f1=file('perf.csv','r')
perfdata=f1.readlines()
f1.close()
results=[]
f2=open('filter.csv','w')
f2.writelines(perfdata[0])
foriinperfdata:
n=re.findall(filterStr,i)
ifn:
f2.writelines(i)
f2.close()
df=pd.read_csv('filter.csv')
df=df.sort_values('elapsed',ascending=False)
df.to_csv('filterOrder.csv',index=False)

#/usr/bin/evn python
# -*- coding: utf-8 -*-
import sys
from operator import itemgetter

# input_file = open(sys.argv[1])
input_file = open("D:\tmp\a.csv")
output_file = open("D:\tmp\asorted.csv","w")

table = []

for line in input_file:
  col = line.split('|') 
  col[0] = col[0].strip()
  col[1] = int(col[1])
  col[2] = int(col[2]) 
  col[3] = int(col[3].strip())
  table.append(col) #嵌套列表table[[8,8][*,*],...]

table_sorted = sorted(table, key=itemgetter(1,2),reverse=True)#先后按列索引1,2排序，降序排列

output_file.write('header' + '\n')
for row in table_sorted:          #遍历读取排序后的嵌套列表
  row = [str(x) for x in row]       #转换为字符串格式，好写入文本
  output_file.write("\t".join(row) + '\n')
  

input_file.close()
output_file.close()