pydemo

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) 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

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb

pydemo

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) 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

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb

pydemo

import scala.language.postfixOps


scala> object ? {def z(s: Any) {println(s)}}
defined object $qmark
scala> ?z "Hello world"

Hello world

pydemo

name := "delegation"

scalaVersion := "2.10.0"

libraryDependencies <+= (scalaVersion)("org.scala-lang" % "scala-reflect" % _)

pydemo

scala> :paste -raw
// Entering paste mode (ctrl-D to finish)

package Foo

class Bar

// Exiting paste mode, now interpreting.

pydemo

// Inspired by http://stackoverflow.com/questions/2886446/how-to-get-methods-list-in-scala

def dir(x: AnyRef): Unit = println(x.getClass.getMethods.map(_.getName).distinct.sorted.mkString(" "))

scala> dir("")
charAt codePointAt codePointBefore codePointCount compareTo compareToIgnoreCase concat contains contentEquals copyValueOf endsWith equals equalsIgnoreCase format getBytes getChars getClass hashCode indexOf intern isEmpty lastIndexOf length matches notify notifyAll offsetByCodePoints regionMatches replace replaceAll replaceFirst split startsWith subSequence substring toCharArray toLowerCase toString toUpperCase trim valueOf wait

pydemo

import scala.util.parsing.combinator._

abstract class Value {
  def eval():Double
}
case class Number(n:Double) extends Value {
  def eval():Double = n
}
case class Binomial(op: String, v1:Value, v2:Value) extends Value {
  def eval():Double = op match {

pydemo

// Code originally found on http://www.hulver.com/scoop/story/2006/2/18/125521/185
// Created by Rogerborg

#include <stdio.h>
#include <windows.h>
#include <list>
using namespace std;

// Change this to the name of the DLL that you want to clone
#define CLONE_DLL "WS2_32"

pydemo

To make extension iterable you define iter on it.

cdef class I:

   cdef:

   list data

pydemo

Cython extension types do not support individual comparison methods like

_eq_

_lt_

_le_

Instead Cython provides single method richcmp(x,y,op)