This switches swig to use python 3 specific features when generating the
bindings, switches the build over to python 3 and makes the neccesary
python 2 to 3 conversions in the bindings and tests.
Using the function gnc_price_create and book as a parameter, it is possible to create the new GncPrice object. This will remove the necessity of cloning the prices from existing ones in Python scripts.
Where possible in the Python SWIG code use the builtin SWIG conversion
code over custom code. This ensures appropriate overflow/type checking.
With this I have enabled GncNumeric from longs and tested for correct
overflow handling.
Note: This could be extended to GUILE but I am not familiar enought to
safely enable this.
At current the Python GncNumeric has issues with type conversion eg.
* GncNumeric(1.3) = 1.00
* GncNumeric("1.3") is OK but any future methods error
This behaviour was relied on for the Account tests to pass as it used
GncNumeric(0.5) == GncNumeric(1.0) but this is not what many users would
expect.
This fix alows GncNumeric to be constructed from a (int, int)
numerator/denominator pair or int/float/str where double_to_gnc_numeric
and string_to_gnc_numeric from C is used.
It is split into
- /libgnucash (for the non-gui bits)
- /gnucash (for the gui)
- /common (misc source files used by both)
- /bindings (currently only holds python bindings)
This is the first step in restructuring the code. It will need much
more fine tuning later on.
