学习及开发程序过程中.借鉴了很多第三方的库.
为了避免可能的法律问题,最好在使用前先看下这个库的限制.
特别是wxpython 和 pyQt库开发软件.
wxpython 是L-GPL,pyQT是GPL.
GPL 有非常强的传染性,被人诟病是病毒..应为你一旦调用了GPL协议的代码,就必须公开源码.
L-GPL只要你不修改源码,仅仅只是调用,是不需要公开源码的.
我 们很熟悉的Linux就是采用了GPL。GPL协议和BSD, Apache Licence等鼓励代码重用的许可很不一样。GPL的出发点是代码的开源/免费使用和引用/修改/衍生代码的开源/免费使用,但不允许修改后和衍生的代 码做为闭源的商业软件发布和销售。这也就是为什么我们能用免费的各种linux,包括商业公司的linux和linux上各种各样的由个人,组织,以及商 业软件公司开发的免费软件了。
GPL协议的主要内容是只要在一个软件中使用(”使用”指类库引用,修改后的代码或者衍生代码)GPL 协议的产品,则该软件产品必须也采用GPL协议,既必须也是开源和免费。这就是所谓的”传染性”。GPL协议的产品作为一个单独的产品使用没有任何问题, 还可以享受免费的优势。
由于GPL严格要求使用了GPL类库的软件产品必须使用GPL协议,对于使用GPL协议的开源代码,商业软件或者对代码有保密要求的部门就不适合集成/采用作为类库和二次开发的基础。
其它细节如再发布的时候需要伴随GPL协议等和BSD/Apache等类似。
LGPL 是GPL的一个为主要为类库使用设计的开源协议。和GPL要求任何使用/修改/衍生之GPL类库的的软件必须采用GPL协议不同。LGPL 允许商业软件通过类库引用(link)方式使用LGPL类库而不需要开源商业软件的代码。这使得采用LGPL协议的开源代码可以被商业软件作为类库引用并 发布和销售。
但是如果修改LGPL协议的代码或者衍生,则所有修改的代码,涉及修改部分的额外代码和衍生的代码都必须采用LGPL协议。因 此LGPL协议的开源 代码很适合作为第三方类库被商业软件引用,但不适合希望以LGPL协议代码为基础,通过修改和衍生的方式做二次开发的商业软件采用。
GPL/LGPL都保障原作者的知识产权,避免有人利用开源代码复制并开发类似的产品。
https://riverbankcomputing.com/software/pyqt/intro
PyQt is a set of Python v2 and v3 bindings for The Qt Company's Qt application framework and runs on all platforms supported by Qt including Windows, OS X, Linux, iOS and Android. PyQt5 supports Qt v5. PyQt4 supports Qt v4 and will build against Qt v5. The bindings are implemented as a set of Python modules and contain over 1,000 classes.
PyQt4 and Qt v4 are no longer supported and no new releases will be made. PyQt5 and Qt v5 are strongly recommended for all new development.
PyQt is dual licensed on all supported platforms under the GNU GPL v3 and the Riverbank Commercial License. Unlike Qt, PyQt is not available under the LGPL. You can purchase the commercial version of PyQt here. More information about licensing can be found in the License FAQ.
PyQt does not include a copy of Qt. You must obtain a correctly licensed copy of Qt yourself. However, binary wheels of the GPL version of PyQt5 are provided and these include a copy of the LGPL version of Qt.
https://www.wxpython.org/pages/license/
wxPython is licenced under the "wxWindows Library Licence".
The wxWindows Library Licence is essentially the L-GPL (Library General Public Licence), with an exception stating that derived works in binary form may be distributed on the user's own terms. This is a solution that satisfies those who wish to produce GPL'ed software using wxWidgets, and also those producing proprietary software.
The wxWindows Library Licence has been approved by the Open Source Initiative.
In August 2005, an ambiguity in Clause 2 was removed (replaced "the user's" with "your") and the version bumped to 3.1.
The following sections present the actual text of the various license files. In general you may replace "wxWidgets" with "wxPython" in order to apply the license terms to your use of wxPython.