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-rw-r--r--youtube_dl/utils.py9
1 files changed, 8 insertions, 1 deletions
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index f339fcb31..bfe88b40b 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -71,7 +71,7 @@ def preferredencoding():
def write_json_file(obj, fn):
- """ Encode obj as JSON and write it to fn, atomically """
+ """ Encode obj as JSON and write it to fn, atomically if possible """
fn = encodeFilename(fn)
if sys.version_info < (3, 0) and sys.platform != 'win32':
@@ -108,6 +108,13 @@ def write_json_file(obj, fn):
try:
with tf:
json.dump(obj, tf)
+ if sys.platform == 'win32':
+ # Need to remove existing file on Windows, else os.rename raises
+ # WindowsError or FileExistsError.
+ try:
+ os.unlink(fn)
+ except OSError:
+ pass
os.rename(tf.name, fn)
except:
try: