Add __slots__ to the Coord class.

This further reduces memory usage for large inputs (#72)

2 files changed, 6 insertions, 3 deletions

diff --git a/pycparser/plyparser.py b/pycparser/plyparser.py
index cf327ab..c945f09 100644
--- a/pycparser/plyparser.py
+++ b/pycparser/plyparser.py
@@ -15,6 +15,7 @@ class Coord(object):
             - Line number
             - (optional) column number, for the Lexer
     """
+    __slots__ = ('file', 'line', 'column')
     def __init__(self, file, line, column=None):
         self.file = file
         self.line = line
diff --git a/z.py b/z.py
index 33cbf4d..5b25120 100644
--- a/z.py
+++ b/z.py
@@ -76,6 +76,8 @@ class NodeVisitor(object):
 
 
 def heapyprofile():
+    # pip install guppy
+    # [works on python 2.7, AFAIK]
     from guppy import hpy
     import gc
 
@@ -83,7 +85,7 @@ def heapyprofile():
     ast = parse_file('/tmp/197.c')
     gc.collect()
     h = hp.heap()
-    print h
+    print(h)
 
 
 def memprofile():
@@ -109,8 +111,8 @@ if __name__ == "__main__":
 }
     '''
 
-    #memprofile()
-    heapyprofile()
+    memprofile()
+    #heapyprofile()
 
     #parser = CParser()
     #ast = parser.parse(source_code, filename='zz')