I screwed up with git and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6

1. Attach a shell to the docker container

2. Install GDB (needed by pyrasite)

   apt-get update && apt-get install gdb

3. Install pyrasite - this well let you attach a Python shell to the still-running process.

   pip install pyrasite

4. Install uncompyle6, which will let you get Python source code back from in-memory code objects:

   pip install uncompyle6

5. Find the PID of the process that is still running

   ps aux | grep python

6. Attach an interactive prompt using pyrasite

   pyrasite-shell

7. Now you're in an interactive prompt! Import the code you need to recover:

   from my_package import my_module

8. Figure out which functions and classes you need to recover:

   dir(my_module) ['MyClass', 'my_function']

9. Decompile the function into source code:

   import uncompyle6 import sys uncompyle6.main.uncompyle( 2.7, my_module.my_function.func_code, sys.stdout )

   uncompyle6 version 2.9.10

   Python bytecode 2.7

   Decompiled from: Python 2.7.12 (default, Nov 19 2016, 06:48:10)

   [GCC 5.4.0 20160609]

   Embedded file name: /srv/destination_service/destination_service/wsgi.py

   function_body = "appears here"

10. For the class, you'll need to decompile each method in turn:

    uncompyle6.main.uncompyle( 2.7, my_module.MyClass.my_method.im_func.func_code, sys.stdout )

    uncompyle6 version 2.9.10

    Python bytecode 2.7

    Decompiled from: Python 2.7.12 (default, Nov 19 2016, 06:48:10)

    [GCC 5.4.0 20160609]

    Embedded file name: /srv/my_package/my_module.py

    class_method_body = "appears here"