There has to be a better way to split this string!

Tue Feb 9 20:26:13 EST 2016

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Hello Everyone,

I am using datetime.now() to create a unique version of a filename.
When the final file is named, it will look something like:

myfile-2015-02-09-19-08-45-4223

Notice I'm replacing all of the "."'s, " "'s, and ":"'s returned by
datetime.now() with "-"'s. I'm doing that using the following code but
it's freaking ugly and I KNOW there is a better way to do it. I just
can't seem to think of it right now. Can anyone help? What is the
"right", or at least, less ugly, way to do this task?

Here is the code I'm using:

    unprocessed_tag = str(datetime.datetime.now())
    removed_spaces = unprocessed_tag.split(" ")
    intermediate_string = removed_spaces[0] + "-" + removed_spaces[1]
    removed_colons = intermediate_string.split(":")
    intermediate_string = removed_colons[0] + "-" + removed_colons[1]
+ "-" + removed_colons[2]
    removed_dots = intermediate_string.split(".")
    final_string = removed.dots[0] + "-" + removed_dots[1]

    return final_string

Thanks!
Anthony