Creating new files with Lua I/O functions

I'm starting to learn about the io. functions, and am trying to implement them in my code. I've searched for the answer to this and nothing 开发者_Go百科seems to give a clear cut yes or no, or at least I don't see one. I'm hoping someone here will know the answer and be able to help with this.

I'm wanting to create a text file that I can write to as time progresses. It'll basically be a log to which I'll be appending lines of output. Apparently io.open("textfile.txt") does not create the file, or so it appears.

Is there a way to create a text file in Lua that can later be accessed with io.read/write? Additionally, do I need to call io.close() before opening or creating a new text file? I appreciate any help given. Thanks!

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You need to open the file for writing as follows: f=io.open("textfile.txt","w"). Then use f:write() to write stuff to it. When finished writing, call f:close().