What is the method in Python to remove empty lines?

There are several common ways to remove blank lines in Python.

1. Utilize the strip() method:

with open('file.txt', 'r') as file:
    lines = file.readlines()
    lines = [line.strip() for line in lines if line.strip()]

1. Utilizing the rstrip() method:

with open('file.txt', 'r') as file:
    lines = file.readlines()
    lines = [line.rstrip() for line in lines if line.rstrip()]

1. Using the join() method:

with open('file.txt', 'r') as file:
    content = file.read()
    lines = [line for line in content.split('\n') if line.strip()]
    result = '\n'.join(lines)

The methods provided can all achieve the removal of empty lines in a file. The choice of method depends on your specific needs and personal preferences.