python 提取文件指定列的方法示例

for i in `ls`;do sed -i '1d' $i;done

import sys
leng=len(sys.argv)
for i in range(leng): # index the input file and output file location,maybe it's too complex
 if sys.argv[i]=="-i":
 it=i
 if sys.argv[i]=="-o":
 out=i
for i in range(it+1,out): # input file number(there should have same # of in and out file)
 print(sys.argv[i])
 file=open(sys.argv[i],'r')
 f=open(sys.argv[i+out-it],'w')
 count=[]
 for lines in file.readlines():
 two=[]
 lines=lines.rstrip('\n')
 b=lines.split('\t')
 two.append(b[0])
 if(b[6].startswith('.')): #chage path to count,some output problem
  b[6]="count"
 two.append(b[6])
 s='\t'.join(two)
 f.write(s+'\n')
 f.close