# File: code-example-3.py

def keyboard(banner=None):
    import code, sys

    # use exception trick to pick up the current frame
    try:
        raise None
    except:
        frame = sys.exc_info()[2].tb_frame.f_back

    # evaluate commands in current namespace
    namespace = frame.f_globals.copy()
    namespace.update(frame.f_locals)

    code.interact(banner=banner, local=namespace)

def func():
    print "START"
    a = 10
    keyboard()
    print "END"

func()

## $ python code-example-3.py
## START
## Python 1.5.2
## Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam
## (InteractiveConsole)
## >>> print a
## 10
## >>> print keyboard
## <function keyboard at 9032c8>
## ^Z
## END