月份：2015年9月

#!/usr/bin/env python

eval_code = compile("100 + 200", "", "eval")

print eval(eval_code)

single_code = compile("print 'Hello World'", '', "single")

exec single_code

exec_code = compile("""

req = input('Count how many numbers?')

for eachNum in range(req):

    print eachNum

            """, '','exec')

exec exec_code

#! /usr/bin/env python

def foo():

    return True

def bar():

    'bar() does not much'

    return True

foo.__doc__ = 'foo() does not do much'

foo.tester = '''

if foo():

    print 'PASSED'

else:

    print 'FAILED'

'''

for eachAttr in dir():

    obj = eval(eachAttr) #convert the string to the object

    if isinstance(obj, type(foo)):

        if hasattr(obj, '__doc__'):

            print '\n Function "%s" has a doc string:\n\t%s' %(eachAttr, obj.__doc__)

        if hasattr(obj, 'tester'):

            print 'Function "%s" has a tester...executing ' %eachAttr

            exec obj.tester #to execute the strings

        else:

            print 'Funciton "%s" has no tester...skipping' %eachAttr

    else:

        print '"%s" is not a Function' %eachAttr

print '________________dir()__________________'

print dir()