Python method called read_diary_file that reads the content from a text file named “DIARY.TXT” line by line and displays it on the screen: def read_diary_file(): try: with open("DIARY.TXT", 'r') as…
Python method called write_multiple_lines that writes multiple lines of text content into a text file named “mylife.txt”: def write_multiple_lines(contents): try: with open("mylife.txt", 'w') as file: file.writelines(contents) print("Text content written successfully…
Python program that displays all the records in a file along with their line numbers: def display_records_with_line_numbers(filename): try: with open(filename, 'r') as file: for line_number, line in enumerate(file, start=1): print(f"Line…
Python function called remove_lowercase that accepts two file names as arguments and copies all lines that do not start with a lowercase letter from the first file into the second…
Here’s a Python program that calculates the size of a file after removing end-of-line (EOL) characters, leading and trailing white spaces, and blank lines: def calculate_file_size(filename): try: with open(filename, 'r')…
Reading a file line by line from beginning is a common task. What if you want to read a file backward? This happens when you need to read log files.…
Here’s a Python program that accepts a filename from the user and displays all the lines from the file that contain the Python comment character ‘#’: def display_comment_lines(filename): try: with…
Here’s a Python program that reads a file called ‘Story.txt’, creates another file called ‘Index.txt’, and stores an index of the words in ‘Story.txt’, indicating the line numbers where each…
To insert a sentence into a very large text file without loading the entire file into memory, you can use a technique called “file buffering” or “file rewriting.” Here’s an…
Write a function in Python to count and display the number of lines starting with alphabet “A” present in a text file “LINES.TXT”, e.g., the file “LINE.TXT” contains the following…