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LEN in Python

LEN 

len counts how many items is there in a list 

  EXAMPLE:

import os, time
listOfEmail = []
def prettyPrint():
  os.system("clear") 
  print("listofEmail") 
  print()
  for index in range(len(listOfEmail)): # len counts how many items in a list
    print(f"{index}: {listOfEmail[index]}") 
  time.sleep(1)

while True:
  print("SPAMMER Inc.")
  menu = input("1. Add email\n2: Remove email\n3. Show emails\n4. Get SPAMMING\n> ")
  if menu == "1":
    email = input("Email > ")
    listOfEmail.append(email)
  elif menu =="2":
    email = input ("Email > ")
    if email in listOfEmail:
      listOfEmail.remove(email)
  elif menu == "3":
    prettyPrint() 
  time.sleep(1)
  os.system("clear")

 

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