Python 词表排列答案

【问题标题】：Python wordlist permutationPython 词表排列
【发布时间】：2015-12-06 03:32:26
【问题描述】：

我怎样才能让这个脚本从列表中置换最多 3 个单词组合？

List.txt 由 4 个字符串组成：

pass
10
test
word

而不是组合所有从一到四个单词，即

output > pass10wordtest, 10testpassword,....etc

我希望最终的组合是：

output > testpassword, passtestword, 10wordtest,....etc

我的代码：

from itertools import permutations
import os

# GET FILE
script_dir = os.path.dirname(os.path.realpath(__file__))
wordlist_rel_path = "List.txt"
wordlist_abs_file_path = os.path.join(script_dir, wordlist_rel_path)

# READ WORD LIST FROM FILE
word_list = []
print ("\ninput file is:", wordlist_abs_file_path,"\n")
with open(wordlist_abs_file_path) as wordlist:
     for line in wordlist:
         word_list.append(line.rstrip())

# PRINT INPUT LIST
print ("input list contains:")
print(word_list,"\n")

# GENERATE POWERSET
powerset_list = []
print ("output list is:")
for n in range(1, len(word_list)+1):
     for perm in permutations(word_list, n):
         powerset_list.append( "".join(perm) )
print(powerset_list)

# WRITE LIST TO FILE
powerset_rel_path = "powerset.txt"
powerset_abs_file_path = os.path.join(script_dir, powerset_rel_path)
powerset_abs_file = open(powerset_abs_file_path, 'w')
for item in powerset_list:
     powerset_abs_file.write("%s\n" % item)
powerset_abs_file.close()

【问题讨论】：

标签： python permutation permute

【解决方案1】：

如何从列表中排列最多 3 个单词组合？

permutations 函数支持第二个参数一次只选择三个输入：

>>> from itertools import permutations
>>> for group in permutations(['pass', '10', 'test', 'word'], 3):
        print(''.join(group))  

pass10test
pass10word
passtest10
passtestword
password10
passwordtest
10passtest
10password
10testpass
10testword
10wordpass
10wordtest
testpass10
testpassword
test10pass
test10word
testwordpass
testword10
wordpass10
wordpasstest
word10pass
word10test
wordtestpass
wordtest10

【讨论】：

【解决方案2】：

from itertools import permutations
import os

# GET FILE 
script_dir = os.path.dirname(os.path.realpath(__file__))
wordlist_rel_path = "List.txt"
wordlist_abs_file_path = os.path.join(script_dir, wordlist_rel_path)

# READ WORD LIST FROM FILE
word_list = [] print ("\ninput file is:", wordlist_abs_file_path,"\n")
with open(wordlist_abs_file_path) as wordlist:
     for line in wordlist:
         word_list.append(line.rstrip())

# PRINT INPUT LIST 
print ("input list contains:")
print(word_list,"\n")

# GENERATE POWERSET 
powerset_list = []
print ("output list is:") 
for n in range(1, len(word_list)+1):
     for perm in permutations(word_list,3):
         powerset_list.append( "".join(perm) ) print(powerset_list)

# WRITE LIST TO FILE 
powerset_rel_path = "powerset.txt" 
powerset_abs_file_path = os.path.join(script_dir, powerset_rel_path) 
powerset_abs_file = open(powerset_abs_file_path, 'w') for item in powerset_list:
powerset_abs_file.write("%s\n" % item) powerset_abs_file.close()

【讨论】：