with open('new_file.csv', 'w', newline='') as new_file:

This line of code opens a new CSV file called "new_file.csv" in write mode. The "newline=''" parameter is used to ensure that universal newlines are used, which means that '\r', '\n', and '\r\n' are all recognized as end-of-line characters.

The "with" statement is used to ensure that the file is properly closed after the block of code inside it has finished executing. This is good practice because it prevents the file from being left open and potentially causing issues with other parts of the program.

Once the file is opened, you can write data to it using the various methods provided by the csv module in Python. For example, you might use the writerow() method to write a single row of data at a time, or the writerows() method to write multiple rows at once. Once you have finished writing data, you should close the file by exiting the "with" block.