Code cleanup

[linpy.git] / pypol / isl.py

diff --git a/pypol/isl.py b/pypol/isl.py
index 74cc5d3..bbc8d13 100644 (file)
--- a/pypol/isl.py
+++ b/pypol/isl.py
@@ -1,10 +1,14 @@
+"""
+note: for islpy
+isl format: basic set: ("{[x, y] : x >= 0 and x < 5 and y >= 0 and y < x+4 }")
+"""
 
 import ctypes, ctypes.util
+import functools
 import math
 import numbers
 import operator
 import re
-import functools
 
 from decimal import Decimal
 from fractions import Fraction
@@ -15,6 +19,7 @@ libisl = ctypes.CDLL(ctypes.util.find_library('isl'))
 
 libisl.isl_printer_get_str.restype = ctypes.c_char_p
 
+
 def _polymorphic_method(func):
     @functools.wraps(func)
     def wrapper(self, other):
@@ -26,6 +31,7 @@ def _polymorphic_method(func):
         raise TypeError('operand should be a Value or a Rational')
     return wrapper
 
+
 class Context:
 
     __slots__ = ('_ic')
@@ -37,8 +43,9 @@ class Context:
     def _as_parameter_(self):
         return self._ic
 
-    def __del__(self):
-        libisl.isl_ctx_free(self)
+    #comment out so does not delete itself after being created
+    #def __del__(self):
+    #   libisl.isl_ctx_free(self)
 
     def __eq__(self, other):
         if not isinstance(other, Context):