vban update

import discord
from discord.ext import commands

class vban:
    """Bans a user from entering any voice channel.
    Commands:
    [p]vban @ExampleUser#0123 {Time}
    Created by iPlayᴳ#3282"""

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

    @commands.command(pass_context=True, no_pm=True)
    async def vban(self, ctx, user: discord.Member):
        """Bans a user from entering any voice channel. Example:
        [p]vban @ExampleUser#0123 {Time}"""
        server = ctx.message.server
        vban = discord.utils.get(server.roles, name="VBanned")
        try:
            falure = False
            for role in user.roles:
                if VBanned == role:
                    failure == True
                    break
            if failure == False:
                await self.bot.add_roles(user, vban)
                await self.bot.say("Successfully voice banned <@{}>".format(user.id))
            if failure == True:
                await self.bot.say("Sorry, I can't VBan someone who is already VBanned")
        except:
            await self.bot.say("Had an error. Please retry.")
        channel = await self.bot.create_channel(server, 'bye', type=discord.ChannelType.voice)
        await self.bot.move_member(user, channel)
        await self.bot.delete_channel(channel)

    @commands.command(pass_context=True, no_pm=True)
    async def unvban(self, ctx, *, user: discord.Member):
        """Unbans a user that has been vbanned. Exmaple:
        [p]unvban @ExampleUser#0123"""
        server = ctx.message.server
        vban = discord.utils.get(server.roles, name="VBanned")
        success = False
        for role in user.roles:
            if VBanned == role:
                try:
                    await self.bot.remove_roles(user, vban)
                    await self.bot.say("Successfully un-voice banned <@{}>".format(user.id))
                    success = True
                    break
        if success == False:
            await self.bot.say("Can't Unvban some who isn't VBanned!")

def setup(bot):
    bot.add_cog(vban(bot))