Python-插入变量（多个列表）

Question

我想在列表中的另一个列表的索引处插入标点符号：

for x in range(len(final1)):
    final1.insert(punc_num[x], punct[x])- WHY WONT THIS WORK?  

任何帮助，请感激:-)

完整代码：

f = open("file.txt","r") 
sentence= f.read()
print (sentence)

punctuations = ("'", "!", "(", ")", "-", "[", "]", "{", "}", ";", ":", '"', "<", ">", ".", "/", "?", "@", "#", "$", "%", "^", "&", "*", "_", "~", ",")

punc_num=[]

for x in sentence:
    if x in punctuations:
        punc_num.append(sentence.index(x))

print(punc_num)


punct=[]

for x in sentence:
    if x in punctuations:
        punct.append(x)

print(punct)





no_punct= ""

for y in sentence:
    if y not in punctuations:
        no_punct = no_punct + y

print (no_punct)





no_punct=no_punct.split()

final= (" ".join(sorted(set(no_punct), key=no_punct.index)))
print(final)
storing=[]

for x in no_punct:

    storing.append (no_punct.index(x))

print (storing)


final1= (" ".join(sorted(set(no_punct), key=no_punct.index)))
print(final1)




for x in range(len(final1)):
    final1.insert(punc_num[x], punct[x])

Answer 1

首先，当您使用final1.insert() ， final1是字符串，而不是列表。 您可以通过执行以下操作来更新它：

final1_list = []
for x in range(len(punc_num)):
    final1_list.insert(punc_num[x], punct[x])
final1 = "".join(final1_list)

第二，定义punc_num ，使用list.index()方法。 由于list.index()将始终返回其参数的第一个匹配项，因此任何给定的标点符号都将始终具有相同的索引，无论其在字符串中出现多少位置。 您可以将该循环更改为此：

punc_num=[]
for x in sentence:
    if x in punctuations:
        index = 0
        while index + sentence[index:].index(x) in punc_num:
            index += sentence[index:].index(x) + 1
        punc_num.append(index + sentence[index:].index(x))

您的整个程序应如下所示：

f = open("file.txt","r")
sentence = f.read()
print (sentence)

punctuations = ("'", "!", "(", ")", "-", "[", "]", "{", "}", ";", ":", '"', "<", ">", ".", "/", "?", "@", "#", "$", "%", "^", "&", "*", "_", "~", ",")

punc_num=[]

for x in sentence:
    if x in punctuations:
        index = 0
        while index + sentence[index:].index(x) in punc_num:
            index += sentence[index:].index(x) + 1
        punc_num.append(index + sentence[index:].index(x))

print(punc_num)


punct=[]

for x in sentence:
    if x in punctuations:
        punct.append(x)

print(punct)





no_punct= ""

for y in sentence:
    if y not in punctuations:
        no_punct = no_punct + y

print (no_punct)



no_punct=no_punct.split()

final= (" ".join(sorted(set(no_punct), key=no_punct.index)))
print(final)
storing=[]

for x in no_punct:

    storing.append (no_punct.index(x))

print (storing)


final1= (" ".join(sorted(set(no_punct), key=no_punct.index)))
print(final1)




final1_list = list(final1)
for x in range(len(punc_num)):
    final1_list.insert(punc_num[x], punct[x])
final1 = "".join(final1_list)