file i/o: use 'with' keyword

2017-11-12 14:33:46 +01:00
parent 8fcf1656d3
commit c65d01ea96
8 changed files with 22 additions and 20 deletions
--- a/lib/blockchain.py
+++ b/lib/blockchain.py
@@ -247,10 +247,9 @@ class Blockchain(util.PrintError):
        delta = height - self.checkpoint
        name = self.path()
        if os.path.exists(name):
-            f = open(name, 'rb')
-            f.seek(delta * 80)
-            h = f.read(80)
-            f.close()
+            with open(name, 'rb') as f:
+                f.seek(delta * 80)
+                h = f.read(80)
        return deserialize_header(h, height)

    def get_hash(self, height):