Question

Write a program that asks the user for the name of a file. The program should display the first 10 lines of the file on the screen (the "head" of the file). If the file has fewer than 10 lines, the entire file should be displayed, with a message indicating the entire file has been displayed.

Answer 1

The question is about writing a Python program to display the first 10 lines of a file specified by the user. The provided program prompts the user for a file name, reads up to 10 lines, and handles cases with fewer lines or if the file is not found.

Step-by-step explanation:

Write a Program to Display the First 10 Lines of a File

To create a program that displays the first 10 lines of a file specified by the user, you can follow these steps to write your program in Python:

1. Ask the user for the name of the file using the input function.
2. Open the file using the open function in read mode.
3. Read the first 10 lines of the file using a loop that iterates 10 times and calls the readline() method.
4. If the file has fewer than 10 lines, display a message indicating the entire file has been displayed.

Here is an example code snippet in Python:

file_name = input('Please enter the name of the file: ')
try:
with open(file_name, 'r') as file:
for i in range(10):
line = file.readline()
if line:
print(line, end='')
else:
print('\\\\The entire file has been displayed.')
break
except FileNotFoundError:
print('File does not exist.')
This program will display the head of the file or the entire content if it's less than 10 lines, and handle cases where the file is not found, preventing the program from crashing.