discord.py: if ctx.author = guild.roles - discord.py

Question

I am creating a command that allows specific users to block everyone.
I don't know how to write the if to make sure that if the author of the command is of that role he can read it (I'm doing this because I would like to impose different limits on certain roles).
At the same time I would like the user who executes the command to be given a user permission where he can write (this command is useful for my server when it is necessary to make important and immediate speeches.)
How could I do?
Error:
Traceback (most recent call last):
File "C:\Users\PC GIUSEPPE\PycharmProjects\untitled\venv\lib\site-packages\discord\ext\commands\bot.py", line 892, in invoke
await ctx.command.invoke(ctx)
File "C:\Users\PC GIUSEPPE\PycharmProjects\untitled\venv\lib\site-packages\discord\ext\commands\core.py", line 797, in invoke
await injected(*ctx.args, **ctx.kwargs)
File "C:\Users\PC GIUSEPPE\PycharmProjects\untitled\venv\lib\site-packages\discord\ext\commands\core.py", line 92, in wrapped
raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: NameError: name 'Guild' is not defined
Code:
#client.command(aleases=["Templock","TEMPLOCK","tl","Tl","TL"])
#commands.has_any_role('Moderatori', 'Triumvirato', 'Co-Triumvirato')
async def templock(ctx, seconds = 0, *,arg="Motivo non specificato"):
channel_ability_mention = ctx.channel.mention
channel_ability_name = ctx.channel.name
embed = discord.Embed(
color=0xa61022
)
if not seconds:
embed.set_author(
name="Per favore specifica il tempo!",
icon_url="https://cdn.discordapp.com/attachments/640563710104043530/730639329453670420/DuscePeppe_FRIULI.png"
)
await ctx.send(embed=embed, delete_after=10.0)
return
if ctx.author == Guild.roles(name='Triumvirato'):
if seconds > 600:
embed.set_author(
name="Hai superato il limite stabilito per i Triumviri!",
icon_url="https://cdn.discordapp.com/attachments/640563710104043530/730639329453670420/DuscePeppe_FRIULI.png"
)
await ctx.send(embed=embed, delete_after=10.0)
return
embed = discord.Embed(
color=0x03c03c
)

Answer 1

First, you didn't defined Guild, if you want the server the command was invoked, you need to replace Guild.roles to ctx.guild.roles.
Then, the way you get the triumvirato role is wrong, you can get it by id or by name this way:
#by id
triumvirato = discord.utils.get(ctx.guild.roles, id=role_id)
#by name
triumvirato = discord.utils.get(ctx.guild.roles, name="Triumvirato")
Finally, ctx.author is a Member object, not a Role object, so your if statement will never be True. To make it work, you'll have to replace this line:
if ctx.author == Guild.roles(name='Triumvirato'):
To this:
if triumvirato in ctx.author.roles: