[Python-checkins] cpython: Fix a ResourceWarning in generate_opcode_h.py

[victor.stinner]

https://hg.python.org/cpython/rev/46e2755b022c
changeset:   105360:46e2755b022c
user:        Victor Stinner <victor.stinner at gmail.com>
date:        Fri Nov 25 11:59:52 2016 +0100
summary:
  Fix a ResourceWarning in generate_opcode_h.py

Use a context manager to close the Python file. Replace also open() with
tokenize.open() to handle coding cookie if any in Lib/opcode.py.

files:
  Tools/scripts/generate_opcode_h.py |  6 +++++-
  1 files changed, 5 insertions(+), 1 deletions(-)


diff --git a/Tools/scripts/generate_opcode_h.py b/Tools/scripts/generate_opcode_h.py
--- a/Tools/scripts/generate_opcode_h.py
+++ b/Tools/scripts/generate_opcode_h.py
@@ -32,10 +32,14 @@
 #endif /* !Py_OPCODE_H */
 """
 
+import tokenize
+
 
 def main(opcode_py, outfile='Include/opcode.h'):
     opcode = {}
-    exec(open(opcode_py).read(), opcode)
+    with tokenize.open(opcode_py) as fp:
+        code = fp.read()
+    exec(code, opcode)
     opmap = opcode['opmap']
     with open(outfile, 'w') as fobj:
         fobj.write(header)

-- 
Repository URL: https://hg.python.org/cpython