5.Write a Program to count number of lines in a text file
 #-------------------------
 
 import os
 
file_name = "sample_data.txt"
content = "Line 1: Machine Learning\nLine 2: Data Science\nLine 3: Computer Vision\nLine 4: Natural Language Processing"

with open(file_name, "w") as f:
    f.write(content)
 
def count_lines(filename):
    try: 
    
        with open(filename, 'r') as file:
            line_count = 0
             
            for line in file:
                line_count += 1
                
        return line_count
    
    except FileNotFoundError:
        return "Error: The file was not found."
 
 
 
total_lines = count_lines(file_name)
print(f"The file '{file_name}' has {total_lines} lines.")