nohup 后台运行python程序print无输出

Jul 25, 2019#python354

AI-generated summary

The author is discussing the issue of not getting any output in the log file when running a Python program in the background using the "nohup" command. They explain that this is because Python's output is buffered, causing a delay in displaying the output in the log file. They suggest using the "-u" parameter in the "nohup" command to disable buffering. The author also provides alternative methods for redirecting the output to the log file or not displaying it at all.

使用 nohup 后台运行 python，print 没有输出到日志

nohup python foobar.py > foobar.log 2>&1 &

发现 foobar.log 中显示不出来 python 程序中 print 的东西。这是因为 python 的输出有缓冲，导致 foobar.log 并不能够马上看到输出。 python 有个 - u 参数，使得 python 不启用缓冲。

nohup python -u foobar.py > foobar.log 2>&1 &

其他玩法：只输出错误到日志 # Only error write to log nohup python -u ./foobar.py> /dev/null 2>foobar.log & 不输出到日志 # Nothing to Display nohup python -u ./foobar.py> /dev/null 2>&1 & 全部 print 输出到日志 # Write all to log nohup python -u ./foobar.py> ./foobar.log 2>&1 &

https://blog.csdn.net/Statham\_stone/article/details/78290813