令牌的所有唯一排列

Question

Output 第 1 部分中標記的所有唯一排列。以及排列總數。

例子：

• 這是一個測試
• 這是測試a
• 這是測試
• 這個測試是一個
• 這個測試a是
• 測試是一個 This

你知道python怎么做嗎？

import itertools
import itertools
from nltk.tokenize import word_tokenize
import nltk
nltk.download('punkt')
def tokenize_word():
  sentence = str(input("please right a comment: "))
  punctuation = '''!()-[]{};:'"\,<>./?@#$%^&*_~'''
 
# Removing punctuations in string
# Using loop + punctuation string
  for element in sentence:
    if element in punctuation:
        sentence = sentence.replace(element, "")
  
  tokenize_sentence= word_tokenize(sentence)
  alphabetics_order_sentence = sorted(tokenize_sentence)
  for i in range(1, len(alphabetics_order_sentence) + 1):
    permutations= itertools.permutations(alphabetics_order_sentence)
    print(permutations)

tokenize_word()

Answer 1

您可以使用 package itertools中的 function permutations （如果允許 package）。

from itertools import permutations

st = "This is a test"
result = list(permutations(st.split()))

for i in result:
    print(" ".join(i))
    
print()
print("The number of permutations is {}".format(len(result)))

Output 來自上面的代碼：

This is a test
This is test a
This a is test
This a test is
This test is a
This test a is
is This a test
is This test a
is a This test
is a test This
is test This a
is test a This
a This is test
a This test is
a is This test
a is test This
a test This is
a test is This
test This is a
test This a is
test is This a
test is a This
test a This is
test a is This

The number of permutations is 24