human
I found an interesting problem on https://leetcode.com/problems/vowel-spellchecker/:
Given a wordlist, we want to implement a spellchecker that converts a query word into a correct word.
For a given query word, the spell checker handles two categories of spelling mistakes:

Capitalization: If the query matches a word in the wordlist (case-insensitive), then the query word is returned with the same case as the case in the wordlist.

        
Example: wordlist = ["yellow"], query = "YellOw": correct = "yellow"
Example: wordlist = ["Yellow"], query = "yellow": correct = "Yellow"
Example: wordlist = ["yellow"], query = "yellow": correct = "yellow"

Vowel Errors: If after replacing the vowels ('a', 'e', 'i', 'o', 'u') of the query word with any vowel individually, it matches a word in the wordlist (case-insensitive), then the query word is returned with the same case as the match in the wordlist.
        
Example: wordlist = ["YellOw"], query = "yollow": correct = "YellOw"
Example: wordlist = ["YellOw"], query = "yeellow": correct = "" (no match)
Example: wordlist = ["YellOw"], query = "yllw": correct = "" (no match)


In addition, the spell checker operates under the following precedence rules:

When the query exactly matches a word in the wordlist (case-sensitive), you should return the same word back.
When the query matches a word up to capitlization, you should return the first such match in the wordlist.
When the query matches a word up to vowel errors, you should return the first such match in the wordlist.
If the query has no matches in the wordlist, you should return the empty string.

Given some queries, return a list of words answer, where answer[i] is the correct word for query = queries[i].
 
Example 1:
Input: wordlist = ["KiTe","kite","hare","Hare"], queries = ["kite","Kite","KiTe","Hare","HARE","Hear","hear","keti","keet","keto"]
Output: ["kite","KiTe","KiTe","Hare","hare","","","KiTe","","KiTe"]
 
Note:

1 <= wordlist.length <= 5000
1 <= queries.length <= 5000
1 <= wordlist[i].length <= 7
1 <= queries[i].length <= 7
All strings in wordlist and queries consist only of english letters.

I tried it in Python, but could not do it. Can you solve it?

Can you provide a the Python code you requested?
assistant
#Here is the Python code you requested.

class Solution:
    def spellchecker(self, wordlist: List[str], queries: List[str]) -> List[str]:
        def helper(query):
            # check for exact
            if query in wordlist:
                return query
            # check for first case-insensitive match
            if query.lower() in lowercase:
                return wordlist[lowercase[query.lower()]]
                
            # check for vowel error match
            withoutVowelQuery = \"\"
            for char in query:
                if char.lower() in vowels:
                    withoutVowelQuery += '#'
                else:
                    withoutVowelQuery += char.lower()
                    
            if withoutVowelQuery in without_vowel:
                return wordlist[without_vowel[withoutVowelQuery]]
            # else return empty string
            return \"\"
        
        res = []
        
        lowercase = {}
        
        for i, word in enumerate(wordlist):
            if word.lower() not in lowercase:
                lowercase[word.lower()] = i
        
        vowels = {'a', 'e', 'i', 'o', 'u'}
        without_vowel = {}
        
        for i, word in enumerate(wordlist):
            newWord = \"\"
            for char in word:
                if char.lower() in vowels:
                    newWord += '#'
                else:
                    newWord += char.lower()
            if newWord not in without_vowel:
                without_vowel[newWord] = i
        
        # print(wordlist)
        # print(lowercase)
        # print(without_vowel)
        
        for query in queries:
            res.append(helper(query))
        return res