python - 创建 Ipython magic 命令以将最后一个控制台输入保存到文件中

Question

备注现在我找到了解决方案。我想在 ipython 中实现我自己的神奇命令，它将最后的输入保存到 python 文件中，以便交互式地生成可执行的 python 代码:我考虑过将其保存为自己的magicfile.py在ipython启动目录中:

#Save this file in the ipython profile startup directory which can be found via:
#import IPython
#IPython.utils.path.locate_profile()
from IPython.core.magic import (Magics, magics_class, line_magic,
                                cell_magic, line_cell_magic)

# The class MUST call this class decorator at creation time
@magics_class
class MyMagics(Magics):

    @line_magic
    def s(self, line):
        import os
        import datetime
        today = datetime.date.today()
        get_ipython().magic('%history -l 1 -t -f history.txt /')
        with open('history.txt', 'r') as history:
            lastinput = history.readline()
            with open('ilog_'+str(today)+'.py', 'a') as log:
                log.write(lastinput)
        os.remove('history.txt')
        print 'Successfully logged to ilog_'+str(today)+'.py!'

# In order to actually use these magics, you must register them with a
# running IPython.  This code must be placed in a file that is loaded once
# IPython is up and running:
ip = get_ipython()
# You can register the class itself without instantiating it.  IPython will
# call the default constructor on it.
ip.register_magics(MyMagics)

所以现在我在 ipython 中输入命令，然后 s;并将其附加到今天的日志文件中。

Answer 1

使用附加参数 -a 和 %save。

如果这是您要保存的行:

In [10]: print 'airspeed velocity of an unladen swallow: '

然后像这样保存:

In [11]: %save -a IPy_session.py 10
The following commands were written to file `IPy_session.py`:
print 'airspeed velocity of an unladen swallow: '

请参阅Ipython %save documentation