Reading a .txt file in python

Question

I have use the following code to read a .txt file:

f = os.open(os.path.join(self.dirname, self.filename), os.O_RDONLY)

And when I want to output the content I use this:

os.read(f, 10);

Which means that this method reads 10 bytes from the beginning of the file on. While I need to read the content as much as it is, using some values such as -1 and so. What should I do?

Answer 1

You have two options:

1. Call os.read() repeatedly.

2. Open the file using the open() built-in (as opposed to os.open()), and just call f.read() with no arguments.

The second approach carries certain risk, in that you might run into memory issues if the file is very large.