chardet.detect() returns a dictionary which provides the encoding as the value associated with the key 'encoding'. So you can do this:

import chardet    
rawdata = open(infile, 'rb').read()
result = chardet.detect(rawdata)
charenc = result['encoding']

The chardet documentation is not explicitly clear about whether text strings and/or byte strings are supposed to work with the module, but it stands to reason that if you have a text string you don't need to run character detection on it, so you should probably be passing byte strings. Hence the binary mode flag (b) in the call to open(). But chardet.detect() might also work with a text string depending on which versions of Python and of the library you're using, i.e. if you do omit the b you might find that it works anyway even though you're technically doing something wrong.

Why not try installing it using pip?

https://pip.pypa.io/en/latest/installation/

Pip is great for installing modules. Just download the get-pip.py and follow the instructions on the installation page. Once it's installed, make sure these are in your windows path: C:\Python27;C:\Python27\Tools\Scripts;C:\Python27\Scripts;

Then just run "pip install chardet" and it will install the latest version of chardet that will work with your version of python. You can use pip to install most modules without having to download the source. It's a lot easier than trying to get source files in my opinion.