diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/imghdr.py | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/Lib/imghdr.py b/Lib/imghdr.py index 62518b5..10cc085 100644 --- a/Lib/imghdr.py +++ b/Lib/imghdr.py @@ -5,13 +5,19 @@ # Recognize sound headers # #-------------------------# -def what(filename): - f = open(filename, 'r') - h = f.read(32) - for tf in tests: - res = tf(h, f) - if res: - return res +def what(filename, h=None): + if not h: + f = open(filename, 'r') + h = f.read(32) + else: + f = None + try: + for tf in tests: + res = tf(h, f) + if res: + return res + finally: + if f: f.close() return None |