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-rw-r--r--youtube_dl/extractor/letv.py17
1 files changed, 8 insertions, 9 deletions
diff --git a/youtube_dl/extractor/letv.py b/youtube_dl/extractor/letv.py
index 9665ece89..9fd494c29 100644
--- a/youtube_dl/extractor/letv.py
+++ b/youtube_dl/extractor/letv.py
@@ -94,17 +94,16 @@ class LetvIE(InfoExtractor):
return encrypted_data
encrypted_data = encrypted_data[5:]
- _loc4_ = bytearray()
- while encrypted_data:
- b = compat_ord(encrypted_data[0])
- _loc4_.extend([b // 16, b & 0x0f])
- encrypted_data = encrypted_data[1:]
+ _loc4_ = bytearray(2 * len(encrypted_data))
+ for idx, val in enumerate(encrypted_data):
+ b = compat_ord(val)
+ _loc4_[2 * idx] = b // 16
+ _loc4_[2 * idx + 1] = b % 16
idx = len(_loc4_) - 11
_loc4_ = _loc4_[idx:] + _loc4_[:idx]
- _loc7_ = bytearray()
- while _loc4_:
- _loc7_.append(_loc4_[0] * 16 + _loc4_[1])
- _loc4_ = _loc4_[2:]
+ _loc7_ = bytearray(len(encrypted_data))
+ for i in range(len(encrypted_data)):
+ _loc7_[i] = _loc4_[2 * i] * 16 + _loc4_[2 * i + 1]
return bytes(_loc7_)