嗨，我正在学习Python，出于好奇，我编写了一个程序来删除文件中多余的单词。
我正在比较文件text1.txt中的测试。和‘text2.txt’，基于text1中的测试，我删除了test2中多余的单词。在# Bin/ Python
text1 = open(‘text1.txt’,’r’)
text2 = open(‘text2.txt’,’r’)
t_l1 = text1.readlines()
t_l2 = text2.readlines()
# printing to check if the file contents were read properly.
print ‘ Printing the file 1 contents:’
w_t1 = []
for i in range(len(t_l1)):
w_t1 = t_l1[i].split(‘ ‘)
for j in range(len(w_t1)):
print w_t1[j]
#printing to see if the contents were read properly.
print’File 2 contents:’
w_t2 = []
for i in range(len(t_l2)):
w_t2.extend(t_l2[i].split(‘ ‘))
for j in range(len(w_t2)):
print w_t2[j]
print ‘comparing and deleting the excess variables.’
i = 1
while (i<=len(w_t1)):
if(w_t1[i-1] == w_t2[i-1]):
print w_t1[i-1]
i += 1
# I put all words of file1 in list w_t1 and file2 in list w_t2. Now I am checking if
# each word in w_t1 is same as word in same place of w_t2 if not, i am deleting the
# that word in w_t2 and continuing the while loop.
else:
w.append(str(w_t2[i-1]))
w_t2.remove(w_t2[i-1])
i = i
print ‘The extra words are: ‘+str(w) +’\n’
print w
print ‘The original words are: ‘+ str(w_t2) +’\n’
print ‘The extra values are: ‘
for item in w:
print item
# opening the file out.txt to write the output.
out = open(‘out.txt’, ‘w’)
out.write(str(w))
# I am closing the files
text1.close()
text2.close()
out.close()
说text1.txt文件有“生日快乐亲爱的朋友”的字样
text2.txt上写着“祝你生日快乐，我亲爱的朋友”
程序应该在text2.txt中给出额外的单词，即“鼓掌，给，你，我的，最好”
上面的程序运行得很好，但是如果我必须对一个包含数百万字或百万行的文件执行此操作呢？？检查每个单词似乎不是一个好主意。我们有没有Python预定义的函数呢？？在
注：如果这是一个错误的问题，请原谅我，我正在学习python。很快我就不再问这些了。在