Python进入交互模式4种方法

python -i myapp.py

    import code
    # before
    code.interact()
    # after

for thing in set_of_things:
    import pdb;
    pdb.set_trace()
    do_stuff_to(thing)

from IPython import embed

for thing in set_of_things:
  embed()
  do_stuff_to(thing)