Tiny example of use of cffi to call

Not obviously better than ctypes it seems

interface/C/test_teqpc_FFI.py

@@ -0,0 +1,21 @@
+"""
+A small script showing how to use the cffi library in Python to call the teqp
+shared library
+"""
+from cffi import FFI
+import json 
+
+ffi = FFI()
+ffi.cdef(open('teqpc.h').read().replace('EXPORT_CODE','').replace('CONVENTION',''))
+
+# This next line will need to be changed to the absolute path of the library that was compiled
+C = ffi.dlopen('bld/Debug/libteqpc.dylib')
+
+handle = ffi.new("long long*")
+buffer = ffi.new("char[]", ("?"*300).encode('ascii'))
+
+spec = ffi.new("char[]", json.dumps({'kind':'vdW1', 'model': {'a': 1, 'b': 2}}).encode('ascii'))
+C.build_model(spec, handle, buffer, 300)
+
+print(handle[0])
+print(ffi.string(buffer).decode('ascii'))