[英]How to listen port parallel in python + linux
everyone! 大家! I have a python script, which process input from COM-port.
我有一个python脚本,可处理来自COM端口的输入。
import sys
for string in sys.stdin:
some_calculation(string)
It runs like this: 它像这样运行:
cat -v /dev/pts/2 | python3 'process.py'
I want to make it parallel, for example by using GNU parallel. 我想使其平行,例如通过使用GNU parallel。 My way is like this: A|
我的方式是这样的: parallel B
平行B
cat -v /dev/pts/2 | parallel --pipe --recstart '>' python3 process.py
But it is not working. 但这是行不通的。
Any ideas? 有任何想法吗? Many thanks.
非常感谢。 UPDATE: I found some solution:
更新:我找到了一些解决方案:
cat /dev/pts/2 | parallel -j2 "echo {} | python3 process.py"
Another one by Inian: Inian的另一个:
cat -v /dev/pts/2 | parallel --recstart '>' --pipe python3 process.py
You can invoke GNU parallel
with the --pipe
option as below:- 您可以使用
--pipe
选项GNU parallel
调用GNU parallel
,如下所示:
--pipe
Spread input to jobs on stdin (standard input). Read a block
of data from stdin (standard input) and give one block of data
as input to one job.
Use the restart
flag before the --pipe
在
--pipe
之前使用restart
标志
cat -v /dev/pts/2 | parallel --recstart '>' --pipe python3 process.py
More info about GNU parallel
. 有关
GNU parallel
更多信息。
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