python - 如何抑制 IPython 启动消息？

Question

调试时，我经常进入 IPython shell 进行交互式代码测试。然而，这也会导致 python 版本、日期和帮助说明的大量信息转储到标准输出。我如何才能抑制此信息，使其不会掩盖有意的调试消息？

x = get_important_data()
print 'important info! right here! The data is in variable "x"'
import IPython
IPython.embed()

这段代码给出了这样的输出...

important info! right here! The data is in variable "x"
Python 2.7.11 |Anaconda 2.4.0 (x86_64)| (default, Dec  6 2015, 18:57:58) 
Type "copyright", "credits" or "license" for more information.

IPython 4.0.0 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]:

Answer 1

你可以这样做:

IPython.embed(banner1="")

将 banner1 设置为空字符串会使启动消息消失。它实际上不会删除消息，但会用空字符串替换它们。

您还可以使用 banner1、banner2 和 exit_msg 参数添加有用的消息:

IPython.embed(
    banner1="Entering Debug Mode", 
    banner2="Here's another helpful message",
    exit_msg="Exiting the debug mode!"
)

如果您需要从命令行启动 IPython 实例，您可以这样做:

ipython --no-banner