In PYTHON 3 please write function ticker that takes a string

In PYTHON 3, (please) write function ticker() that takes a string (the name of a file) as input. The file

will contain company names and stock (ticker) symbols. In this file, a company name will

occupy a line and its stock symbol will be in the next line. Following this line will be a line

with another company name, and so on. Your program will read the file and store the name

and stock symbol in a dictionary. Then it will provide an interface to the user so the user

can obtain the stock symbol for a given company. Test your code on the NASDAQ 100 list

of stock given in file nasdaq.txt.

nasdaq.txt contents:

Solution

import os
import sys

def ticker():
  
try:
filename = raw_input(\"Please enter a filename: \")
txt = open(filename)

   list1 = []
   dict1 = {}

        for line in txt:
   line = line.split(\'\ \')
   list1.append(line[0])

   j = 1

   for i in range(0,len(list1),2):
   dict1[list1[i]] = list1[j]
   j = j+2

  
while 1:
           try:
       comp = raw_input(\"Input the company name: \")
       print dict1[comp]
           except:
               print \"Company name not found!!!\"
               break
   return

except:
print \"File not found!!!\"

ticker()