嗨，我正在學(xué)習(xí)Python，出于好奇，我編寫了一個程序來刪除文件中多余的單詞。

我正在比較文件text1.txt中的測試。和‘text2.txt’，基于text1中的測試，我刪除了test2中多余的單詞。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()

說text1.txt文件有“生日快樂親愛的朋友”的字樣

text2.txt上寫著“祝你生日快樂，我親愛的朋友”

程序應(yīng)該在text2.txt中給出額外的單詞，即“鼓掌，給，你，我的，最好”

上面的程序運行得很好，但是如果我必須對一個包含數(shù)百萬字或百萬行的文件執(zhí)行此操作呢？？檢查每個單詞似乎不是一個好主意。我們有沒有Python預(yù)定義的函數(shù)呢？？在

注：如果這是一個錯誤的問題，請原諒我，我正在學(xué)習(xí)python。很快我就不再問這些了。在

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