Now we’ll look at how to delete a line that matches a given string. We’ve seen how to remove content from a file based on its line position. If we plan to use a block of Python code more than once, it’s a good idea to wrap it in a function. # call the function, passing the file and line to skipīy wrapping our logic in a function, we can easily remove a line from a file by calling remove_lines() and passing the name of the file and the number of the line we’d like to remove.

Python takes care of that for us.ġ0 Gia Hill Example 1: Remove a line based on a specified line number def remove_line(fileName,lineToSkip): When we reach the line we want to delete, skip itīecause we’re using a Python with statement to handle the file, there’s no need to close it after we’re done.Use a for loop to read each line and write it to the file.When we reach the line we want to remove, an if statement makes sure we skip the line. Using a for loop to iterate over the lines of the file, we also make use of a variable to keep track of the current line number. Next, we’ll use another with statement to open the file again, this time in write mode.

That’s all for reading the list of names. With the file open, we’ll employ the readlines() method to retrieve a list containing the file’s contents. In Python, we can use the with statement to safely open files. Our goal is to delete the 7th line in the file. The file is called names.txt and it’s saved in the same directory as our python file. Starting with a randomly generated list of names saved on our computer, we’ll use Python to delete a name from the list based on the order it appears in the list. In our first example, we’ll look at removing a line based on it’s position in the file. We can use Python to handle both large and small files in a memory efficient manner.

How to clear data in r