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-rw-r--r--test/Deprecated/SourceSignatures/implicit-cache.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/test/Deprecated/SourceSignatures/implicit-cache.py b/test/Deprecated/SourceSignatures/implicit-cache.py
index af6aa49..a4bdc78 100644
--- a/test/Deprecated/SourceSignatures/implicit-cache.py
+++ b/test/Deprecated/SourceSignatures/implicit-cache.py
@@ -41,7 +41,8 @@ SetOption('implicit_cache', 1)
SourceSignatures('timestamp')
def build(env, target, source):
- open(str(target[0]), 'wt').write(open(str(source[0]), 'rt').read())
+ with open(str(target[0]), 'wt') as ofp, open(str(source[0]), 'rt') as ifp:
+ ofp.write(ifp.read())
B = Builder(action = build)
env = Environment(BUILDERS = { 'B' : B })
env.B(target = 'both.out', source = 'both.in')