一个 Python 脚本有如下获取当前终端行列宽度的一行代码:
代码语言:javascript复制columns, rows = os.get_terminal_size()
大部分情况是正常的如:
代码语言:javascript复制./hubble_bench.py --help
hubble_bench.py
Usage:
./hubble_bench.py --issue_type=<issue_type>
Options:
--issue_type=<issue_type> cpu_high_load, bufferpool_too_small, io_high_usage, net_high_usage, high_concurrency, slow_query, meta_lock, deadlock, large_uncommitted, seckill, connection_grow
--thread_min=<thread_min>
--thread_max=<thread_max>
但假如后面接管道就报错了:
代码语言:javascript复制./hubble_bench.py --help | less
Traceback (most recent call last):
File "./hubble_bench.py", line 40, in <module>
columns, rows = os.get_terminal_size()
OSError: [Errno 22] Invalid argument
后面发现改成用 shutil 来代替 os 模块就可以了:
代码语言:javascript复制columns, rows = shutil.get_terminal_size()
``