Lỗi name is not defined python

Bạn chỉ cần import thêm dòng này là được

from email import encoders

Rảnh quá mình code lại luôn:

import smtplib
from email.mime.base import MIMEBase
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email import encoders

fromaddr = ""
toaddr = ""

msg = MIMEMultipart[]
msg["From"] = fromaddr
msg["To"] = toaddr
msg["Subject"] = "Quang Hihi"
body = "kkkkk"

try:
    msg.attach[MIMEText[body, "plain"]]
    filename = "/home/pham.huu.quang/PycharmProjects/Text2Speech/data/train_text/label.csv"

    attachment = open[filename, "rb"]

    part = MIMEBase["application", "octet-stream"]
    part.set_payload[attachment.read[]]

    encoders.encode_base64[part]

    part.add_header["Content-Disposition", "attachment; filename=%s" %filename]
    msg.attach[part]

    server = smtplib.SMTP["smtp.gmail.com", 587]
    server.starttls[]
    server.login[fromaddr, "password123"]
    text = msg.as_string[]

    server.sendmail[fromaddr, toaddr, text]
    server.quit[]

except Exception as e:
    print[e]

# -*- coding: utf-8 -*-
import math

global a,b,c,d

def f[x]: return a*math.pow[x,3]+b*math.pow[x,2]+c*x+d

def zzz[gha = float[input["> Gioi han A: "]], ghb = float[input["> Gioi han B: "]], saiso=[ghb-gha]/math.pow[2,20]]:
    gh=[gha+ghb]/2
    if[f[gh]==0 or math.fabs[gha-ghb] < saiso ]: return gh
    if f[gha]*f[gh]