使用Python 3.4导出二进制truetype

Question

我想用我的python程序导出一个truetype文件。根据规范，truetype文件由可能包含以下任何数据类型的表组成：

Data type   Description
BYTE    8-bit unsigned integer.
CHAR    8-bit signed integer.
USHORT  16-bit unsigned integer.
SHORT   16-bit signed integer.
ULONG   32-bit unsigned integer.
LONG    32-bit signed integer.
FIXED   32-bit signed fixed-point number (16.16)
FUNIT   Smallest measurable distance in the em space.
FWORD   16-bit signed integer (SHORT) that describes a quantity in FUnits.
UFWORD  Unsigned 16-bit integer (USHORT) that describes a quantity in FUnits. 
F2DOT14 16-bit signed fixed number with the low 14 bits of fraction (2.14).

我该如何将这类数据写入文件呢？

编辑:到目前为止，我得到的是：

s.data = ''
s.data += '{0:016}'.format(10)

将数字10写为16位无符号整数。但是，我不能

s.file = open('test.ttf', 'wb')
s.file.write(s.data)

因为这引发了一个

TypeError: 'str' does not support the buffer interface 

Answer 1

我这样做了：

    s.data = []
    s.data.append('{0:016b}'.format(someint))
    f = open('test.ttf', 'wb')
    bytearray = array.array('B')
    for b in s.data:
        b1 = int(b[:16], 2)
        bytearray.append(b1)
        if len(b)>16:
            b2 = int(b[16:], 2)
            bytearray.append(b2)
    bytearray.tofile(f)
    f.close()

而且看起来很管用。