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
如果使用bpython，所有的命令历史都会默认保存到~/.pythonhist。
要保存命令以供以后重用，您可以将它们复制到python脚本文件中:
$ cp ~/.pythonhist mycommands.py
然后编辑该文件以清理它并将其放在Python路径下(全局或虚拟环境的site-packages，当前目录，在*.pth中提到，或其他方式)。
要将命令包含到你的shell中，只需从保存的文件中导入它们:
>>> from mycommands import *
其他回答
你可以用内置函数打开:我用它在我的所有 我需要存储一些历史的程序(包括计算器等) 例如:
#gk-test.py or anything else would do
try: # use the try loop only if you haven't created the history file outside program
username = open("history.txt").readline().strip("\n")
user_age = open("history.txt").readlines()[1].strip("\n")
except FileNotFoundError:
username = input("Enter Username: ")
user_age = input("Enter User's Age: ")
open("history.txt", "w").write(f"{username}\n{user_age}")
#Rest of the code is secret! try it your own!
我要感谢所有喜欢我评论的人!感谢您的阅读!
来自安德鲁·琼斯的网站(存档):
import readline
readline.write_history_file('/home/ahj/history')
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。
在安装Ipython并打开Ipython会话后，执行以下命令:
ipython
在你的命令行中，只需运行下面的Ipython 'magic'命令来自动记录你的整个Ipython会话:
%logstart
这将创建一个唯一命名的.py文件，并存储您的会话，以供以后作为交互式Ipython会话使用或在您选择的脚本中使用。
如果您喜欢使用交互式会话，IPython是非常有用的。例如，在您的用例中，有一个%save magic命令，您只需输入%save my_useful_session 10-20 23，将第10行到第20行和第23行保存到my_useful_session.py(为了帮助实现这一点，每一行都有它的数字前缀)。
此外，文件指出:
此函数对输入范围使用与%history相同的语法，然后将行保存到指定的文件名。
例如，这允许引用旧的会话，例如
%save current_session ~0/
%save previous_session ~1/
查看演示页面上的视频以快速了解功能。
