Any algorithm to preserve whitespaces?

[Santosh Kumar]

Yes, Peter got it right.

Now, how can I replace:

    script, givenfile = argv

with something better that takes argv[1] as input file as well as
reads input from stdin.

By input from stdin, I mean that currently when I do `cat foo.txt |
capitalizr` it throws a ValueError error:

    Traceback (most recent call last):
      File "/home/santosh/bin/capitalizr", line 16, in <module>
        script, givenfile = argv
    ValueError: need more than 1 value to unpack

I want both input methods.