# Python Program to Print Lines
# Containing Given String in File

# input file name with extension
file_name = input("Enter The File's Name: ")

# using try catch except to
# handle file not found error.

# entering try block
try:

    # opening and reading the file 
    file_read = open(file_name, "r")

    # asking the user to enter the string to be 
    # searched
    text = input("Enter the String: ")

    # reading file content line by line.
    lines = file_read.readlines()

    new_list = []
    idx = 0

    # looping through each line in the file
    for line in lines:
        
        # if line have the input string, get the index 
        # of that line and put the
        # line into newly created list 
        if text in line:
            new_list.insert(idx, line)
            idx += 1

    # closing file after reading
    file_read.close()

    # if length of new list is 0 that means 
    # the input string doesn't
    # found in the text file
    if len(new_list)==0:
        print("\n\"" +text+ "\" is not found in \"" +file_name+ "\"!")
    else:

        # displaying the lines 
        # containing given string
        lineLen = len(new_list)
        print("\n**** Lines containing \"" +text+ "\" ****\n")
        for i in range(lineLen):
            print(end=new_list[i])
        print()

# entering except block
# if input file doesn't exist 
except :
  print("\nThe file doesn't exist!")