I find myself frequently using Python's interpreter to work with databases, files, etc -- basically a lot of manual formatting of semi-structured data. I don't properly save and clean up the useful bits as often as I would like. Is there a way to save my input into the shell (db connections, variable assignments, little for loops and bits of logic) -- some history of the interactive session? If I use something like script I get too much stdout noise. I don't really need to pickle all the objects -- though if there is a solution that does that, it would be OK. Ideally I would just be left with a script that ran as the one I created interactively, and I could just delete the bits I didn't need. Is there a package that does this, or a DIY approach?
当前回答
保存XUbuntu的输入输出:
在XWindows中，从Xfce终端应用程序运行iPython 单击顶部菜单栏中的“终端”，在下拉菜单中查找保存内容
我发现这节省了输入和输出，一直追溯到我打开终端的时候。这不是特定于ipython的，它与ssh会话或从终端窗口运行的其他任务一起工作。
其他回答
在IPython中，我首先使用
In [2]: %hist
查看我过去的代码。我选择我想要保存的块，然后使用%%文件魔法(%%writefile的缩写)将其粘贴到文件my_file.py中。
In [3]: %%file my_file.py
...: # paste code here
...:
...:
最后按了两次回车键。
使用选项-a: %%file -a my_file.py追加文件。
如果需要，我可以在底层命令行中使用感叹号列出、编辑文件等
In [5]: !ls -l my_file.py
In [6]: !vi my_file.py
我再提一个建议: 世爵
它有历史日志和变量资源管理器。如果你用过MatLab，你就会发现其中的相似之处。
此外，reinteraction为Python会话提供了一个类似笔记本的界面。
有一种方法可以做到。将文件存储在~/.pystartup…
# Add auto-completion and a stored history file of commands to your Python
# interactive interpreter. Requires Python 2.0+, readline. Autocomplete is
# bound to the Esc key by default (you can change it - see readline docs).
#
# Store the file in ~/.pystartup, and set an environment variable to point
# to it: "export PYTHONSTARTUP=/home/user/.pystartup" in bash.
#
# Note that PYTHONSTARTUP does *not* expand "~", so you have to put in the
# full path to your home directory.
import atexit
import os
import readline
import rlcompleter
historyPath = os.path.expanduser("~/.pyhistory")
def save_history(historyPath=historyPath):
import readline
readline.write_history_file(historyPath)
if os.path.exists(historyPath):
readline.read_history_file(historyPath)
atexit.register(save_history)
del os, atexit, readline, rlcompleter, save_history, historyPath
然后在shell中设置环境变量PYTHONSTARTUP(例如在~/.bashrc中):
export PYTHONSTARTUP=$HOME/.pystartup
你也可以添加这个来获得免费的自动补全:
readline.parse_and_bind('tab: complete')
请注意，这只适用于*nix系统。因为readline只在Unix平台上可用。
%history命令非常棒，但不幸的是，它不能让您将%paste 'd保存到sesh中。要做到这一点，我认为你必须在开头执行%logstart(尽管我还没有确认这是有效的)。
我喜欢做的是
%history -o -n -p -f filename.txt
它将在每个输入(o, n和p选项)之前保存输出，行号和'>>>'。请在这里查看文档中的%history。
