blender project: file organization scripts

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I am writing a suite of file organization for blender (very similar to Mays' New Project, Set Project and Edit Current).  

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import Blender
from Blender import Window, Draw, Registry
from os import mkdir

scriptname = "newproject"
docache = True
blendfile = "Base.blend"

# Add the current project to the list of previously created projects
def UpdateRegistry(projectpath):
    scriptdata = Registry.GetKey(scriptname, docache)
    scriptdata['past'].append(projectpath)
    Registry.SetKey(scriptname, scriptdata, docache)


# Save a default blender file in the new projects directory
def SaveBlenderFile(projectpath):
    filepath = projectpath + blendfile
    print "\t1. Saving Blender file %s" % (filepath)
    Blender.Save(filepath, 1)
    return filepath


# Create sub-directories inside the projects directory for organizing data
def CreateProjectDirectoryTree(projectpath):
    dirs2make = ["images", "tmp", "ref", "doc", "final"]
    print "\t2. Creating sub-directories:"
    for dir in dirs2make:
        path = projectpath + dir
        print "\t\t %s" % (path)
        mkdir(path)


# On setting a new project, the FileSelector calls this function
def NewProject(projectpath):
    print "Creating new project %s" % (projectpath)
    filepath = SaveBlenderFile(projectpath)
    CreateProjectDirectoryTree(projectpath)
    UpdateRegistry(projectpath)
    Blender.Load(filepath)


# This script stores inforamtion in a config file for later introspection
if not Registry.GetKey(scriptname, docache):
    scriptdata = {}
    scriptdata['past'] = []
    Registry.SetKey(scriptname, scriptdata, docache)


# Open the file selector so that the user can create a new project
# The project directory is created by the FileSelector itself.
# The script creates the project sub-directories
Window.FileSelector (NewProject, "Create New Project", "")