On 23/12/2011 02:05, Mac Smith wrote:
On 23-Dec-2011, at 6:48 AM, MRAB wrote:
On 23/12/2011 01:07, Mac Smith wrote:
On 23-Dec-2011, at 6:17 AM, MRAB wrote:
On 23/12/2011 00:33, Mac Smith wrote:
Hi,
I have started HandBrakeCLI using subprocess.popen but the output
is multiline and not terminated with \n so i am not able to read
it using readline() while the HandBrakeCLI is running. kindly
suggest some alternative. i have attached the output in a file.
The lines are terminated with \r, so read with read() and then
split on "\r".
read() will read the complete output and than i will be able to parse
it, i want to read the output of the command in realtime.
Try telling it how much to read with read(size):
def read_lines(output, line_ending="\n"):
buffer = ""
while True:
chunk = output.read(1024)
if not chunk:
break
buffer += chunk
while True:
pos = buffer.find(line_ending)
if pos< 0:
break
pos += len(line_ending)
yield buffer[ : pos]
buffer = buffer[pos : ]
if buffer:
yield buffer
thanks, this helped. just need to correct line_ending="\n" should be
line_ending="\r"
I wrote the default as "\n" because that's the normal line ending in
Python.
If, as in your case, the line ending is different, just pass the
appropriate string as the second argument.
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