AttributeError: module '_json' has no attribute 'read_json'

I am making a blacklist command for my discord bot that interacts with JSON to read and write a JSON file to add or remove blacklisted users. I have a file named _json.py that houses the read and write functions, and it looks like this.

import json
from pathlib import Path

def get_path():
    cwd = Path(__file__).parents[1]
    cwd = str(cwd)
    return cwd

def read_json(filename):
    cwd = get_path()
    with open(cwd+'/bot_config'+filename+'.json', 'r') as file:
        data = json.load(file)
    return data   

def write_json(data, filename):
    cwd = get_path()
    with open(cwd+'/bot_config'+filename+'.json', 'w') as file:
        json.dump(data, file, indent=4)

The file that houses my blacklist/unblacklist command, and all other moderation commands is called moderation.py. Here are the imports and the blacklist/unblacklist commands.

import discord
from discord.ext import commands
from datetime import datetime
import _json

class Moderation(commands.Cog):

    def __init__(self, client):
        self.client = client

    @commands.command()
    @commands.has_permissions(ban_members=True)
    async def blacklist(self, context, member : discord.Member):
        if context.message.author.id == member.id:
            myEmbed = discord.Embed(title="ERROR: Unable to Self Punish", timestamp=datetime.utcnow(), color=0xFF0000)
            myEmbed.set_footer(icon_url=context.author.avatar_url, text=f"Invoked by {context.message.author}")

            await context.message.channel.send(embed=myEmbed)
            return
        
        self.client.blacklisted_users.append(member.id)
        data = _json.read_json("blacklist")
        data["blacklistedUsers"].append(member.id)
        _json.write_json(data, "blacklist")
        await context.send(f"{member.mention} has been blacklisted.")

    @commands.command()
    @commands.has_permissions(ban_members=True)
    async def unblacklist(self, context, member : discord.Member):
        self.client.blacklisted_users.remove(member.id)
        data = _json.read_json("blacklist")
        data["blacklistedUsers"].remove(member.id)
        _json.write_json(data, "blacklist")
        await context.send(f"{member.mention} has been unblacklisted.")

def setup(client):
    client.add_cog(Moderation(client))

When I try to use the blacklist command on a user in my test server, it raises this error in the terminal.

discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError: module '_json' has no attribute 'read_json'