In the Biopython installation instructions, it says that if Biopython doesn't work I'm supposed to do this:
export PYTHONPATH = $PYTHONPATH':/directory/where/you/put/Biopython'
I tried doing that in Cygwin from the ~ directory using the name of the Biopython directory (or everything of it past the ~ directory), but when I tested it by going into the Python interpreter and typing in
From Bio.Seq import Seq
It said the module doesn't exist.
How do I make it so that I don't have to be in the Biopython directory to be able to import Seq?
You can add the directory to your sys.path
list
import sys
biopythondir = '/where/you/put/biopython'
if biopythondir not in sys.path:
sys.path.append(biopythondir)
# import seq
Or, for a more elegant solution than mucking around with environment variables and sys.path
, see how to use .pth files to extend sys.path.