Summary: There’s no GPL incompatible provisos sneaked into any of these licenses, and all of TG2 and it’s underlying components are not copy_left licensed, so you can include them in your projects, even if they are proprietary
Note that the following paragraphs are not legal advice. They are one person’s interpretations of the software licenses involved. If you have any questions or concerns about the licenses, you should consult a lawyer.
TurboGears is a megaframework that incorporates other open source projects. Each project that is included in TurboGears allows for closed source use, and the licenses are included here for convenience. The primary requirement made by the licenses is that you need to include the relevant copyright notices and licenses in your software. Including this file should be sufficient.
Generally speaking, the parts of TurboGears allow you to not only include them with your work, but to modify them at will.
TurboGears is covered by the MIT license:
Copyright (c) 2005 Kevin Dangoor, and others. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.