Python中对文件的比较操作-优快云博客

本文链接：https://blog.youkuaiyun.com/swazer_z/article/details/6975812

此脚本通过用户输入的文件名和扩展名，读取两个文件的内容，并比较它们的相似性和差异性，最后将结果输出到指定的输出文件中。

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import os
ftype=raw_input('The extension for known file types:')
filename1=raw_input('Filename1:')
f1=open(filename1+ftype,'r')
alllines1=f1.readlines()
f1.close()

filename2=raw_input('Filename2:')
f2=open(filename2+ftype,'r')
alllines2=f2.readlines()
f2.close()
i=0
duodei=0
ladd=[]
for s1 in alllines1:
   for s2 in alllines2:
       if cmp(s1,s2)==0:
           i=0
           break
       else:
           i+=1
   if i!=0:
       duodei+=1
       ladd.append(s1)
s1='which %s have but %s not ' % (filename1,filename2)
s1+=os.linesep
ladd.append(s1)
s='%s to %s is %d' % (filename1,filename2,duodei)
s+=os.linesep
ladd.append(s)

j=0
duodej=0
for ss2 in alllines2:
   for ss1 in alllines1:
       if cmp(ss2,ss1)==0:
           j=0
           break
       else:
           j+=1
   if j!=0:
       duodej+=1
       ladd.append(ss2)
ss2='which %s have but %s not ' % (filename2,filename1)
ss2+=os.linesep
ladd.append(ss2)
ss='%s to %s is %d' % (filename2,filename1,duodej)
ss+=os.linesep
ladd.append(ss)

fname=raw_input('Filename out:')
fadd=open(fname+ftype,'w')
fadd.writelines(['%s' % x for x in ladd])
for x in ladd:
   print '%s' % x
#print ['%s' % x for x in ladd]
fadd.close()
filename=raw_input('OK')