Someone

import imp, sys#import stringdef dynamically_load_module(name):    if sys.modules.has_key(name):        print name, "was already loaded!"        return    fp, filename, desc = imp.find_module(name)    try:        imp.acquire_lock()        mod = imp.load_module(name, fp, filename, desc)        imp.release_lock()        print "Loaded: ", mod    finally:        if fp:            fp.close()print sys.modules.keys()dynamically_load_module("string")print sys.modules.keys()print "sys.modules:", sys.modules["string"]print string# ^--- fails here with: #Traceback (most recent call last):#  File "./idea9.py", line 23, in ?#    print string#NameError: name 'string' is not defined