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-rw-r--r--Lib/subprocess.py7
1 files changed, 4 insertions, 3 deletions
diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index abd790d..ea1e0d1 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -1111,6 +1111,7 @@ class Popen(object):
read_set.append(self.stderr)
stderr = []
+ input_offset = 0
while read_set or write_set:
rlist, wlist, xlist = select.select(read_set, write_set, [])
@@ -1118,9 +1119,9 @@ class Popen(object):
# When select has indicated that the file is writable,
# we can write up to PIPE_BUF bytes without risk
# blocking. POSIX defines PIPE_BUF >= 512
- bytes_written = os.write(self.stdin.fileno(), input[:512])
- input = input[bytes_written:]
- if not input:
+ bytes_written = os.write(self.stdin.fileno(), buffer(input, input_offset, 512))
+ input_offset += bytes_written
+ if input_offset >= len(input):
self.stdin.close()
write_set.remove(self.stdin)