Is it possible to write the value of a variable in a %%writefile magic command in IPython notebook?

Question

I want to be able to use a variable to output some text in IPython Notebook. I can write to a file from within IPython Notebook using the %%writefile command. I can also use a variable to name the file using $varaible_name.

file_name = "file.out"
some_variable = "text"

New cell

%%writefile $file_name
????some_varaible  #<-what command goes here

So that the output file (named "file.out") looks like this:

text

Answer 1

Now this is possible using the following command::

%store varname > filename.txt

More about %store