Fix

AuxCode/Python/make_python_struct.py

@@ -32,6 +32,7 @@ for L in lins:
 f.close()
 
 a=parse_file(sys.argv[1], use_cpp=True)
+print('import numpy as np')
 print('LGalaxiesStruct = np.dtype([')
 for i in a.ext[0].type.decls:
   try:
@@ -62,6 +63,10 @@ for i in a.ext[0].type.decls:
     print(i)
 print('])')
 
+print("""if __name__ == '__main__':
+  print('struct size:',LGalaxiesStruct.itemsize)
+""")
+
 
 """
 Decl(name='sfh_numbins',