diff --git a/bindings/py3devil1.py b/bindings/py3devil1.py
index a3ed6d2..0e54412 100755
--- a/bindings/py3devil1.py
+++ b/bindings/py3devil1.py
@@ -239,12 +239,12 @@ devil1tex = Devil1TEX_FN.in_dll(libc, "DEVIL1TEX")
 devil1geo = Devil1GEO_FN.in_dll(libc, "DEVIL1GEO")
 
 class PLDHeader:
-    def __init__(self, filedata):
-        h = PldHeader()
-        devil1pld.getheader(ctypes.byref(h), filedata)
+    def __init__(self, filedata = None):
         self.offsets = []
-        for i in range(0, h.numOffset):
-            self.offsets.append(h.offsets[i])
+        if filedata:
+            h = PldHeader()
+            devil1pld.getheader(ctypes.byref(h), filedata)
+            self.offsets = h.offsets[:h.numOffset]
 
     def __str__(self):
         output = "numOffset: %s" % str(len(self.offsets))
@@ -313,6 +313,8 @@ if __name__ == "__main__":
             data = f.read()
             pld = PLDHeader(data)
             print(pld)
+            pld2 = PLDHeader()
+            print(pld2)
 #---------------------------------------+
    # main()
     mainx()