python: fix to_x() & to_x_32() in test.py

bindings/python/test.py

@@ -53,15 +53,21 @@ def to_x(s):
     from struct import pack
     if not s: return '0'
     x = pack(">q", s)
-    while x[0] in ('0', 0): x = x[1:]
-    return x
+    while x[0] == '\0': x = x[1:]
+    if _python3:
+        return "".join("{0:02x}".format(c) for c in x)  # <-- Python 3 is OK
+    else:
+        return "".join("{0:02x}".format(ord(c)) for c in x)
 
 def to_x_32(s):
     from struct import pack
     if not s: return '0'
     x = pack(">i", s)
-    while x[0] in ('0', 0): x = x[1:]
-    return x
+    while x[0] == '\0': x = x[1:]
+    if _python3:
+        return "".join("{0:02x}".format(c) for c in x)  # <-- Python 3 is OK
+    else:
+        return "".join("{0:02x}".format(ord(c)) for c in x)
 
 # ## Test cs_disasm_quick()
 def test_cs_disasm_quick():