python中小数除法

from __future__ import division print 'total:',total,',success:',success,',accur:%.4f'%(2/57) 

例子：

#! /usr/bin/python from __future__ import division if __name__=='__main__': f=open('crf.result.txt','r') total=0 success=0 for line in f: #print line total=total+1 arrays=line.split('/t') #print len(arrays) if len(arrays)==6: if arrays[4].strip()==arrays[5].strip(): success=success+1 elif len(arrays)==7: if arrays[5].strip()==arrays[6].strip(): success=success+1 print 'total:',total,',success:',success,',accur:%.4f'%(success/total)