问文本演变程序将不会运行

EN

    #-----------------------------------------------------
    # Python 'Evolution of Text' Program
    # More programs at: usingpython.com/programs
    #-----------------------------------------------------

    import string
    import random
    import time


    possibleCharacters = string.ascii_lowercase + string.digits + string.ascii_uppercase + ' .,!?;:'

    target = input("Enter your target text: ")
    attemptThis = ''.join(random.choice(possibleCharacters) for i in range(len(target)))   
    attemptNext = ''

    completed = False

    generation = 0

    while completed == False:
        print(attemptThis)
        attemptNext = ''
        completed = True
        for i in range(len(target)):
           if attemptThis[i] != target[i]:
                completed = False
                attemptNext += random.choice(possibleCharacters)
           else:
                attemptNext += target[i]
        generation += 1
        attemptThis = attemptNext
        time.sleep(0.1)

    print("Target matched! That took " + str(generation) + " generation(s)")

    Welcome to Canopy's interactive data-analysis environment!
    with pylab-backend set to: qt
    Type '?' for more information.

    In [1]: %run "c:\users\phillip\appdata\local\temp\tmpxe9get.py"

    Enter your target text: Hellow World!
      File "<string>", line 1
        Hellow World!
                   ^
    SyntaxError: invalid syntax


    In [2]: %run "c:\users\phillip\appdata\local\temp\tmpvj64ac.py"

    Enter your target text: HellowWorld
    ---------------------------------------------------------------------------
    NameError                                 Traceback (most recent call last)
    c:\users\phillip\appdata\local\temp\tmpvj64ac.py in <module>()
         10 possibleCharacters = string.ascii_lowercase + string.digits + string.ascii_uppercase + ' .,!?;:'
         11 
    ---> 12 target = input("Enter your target text: ")
         13 attemptThis = ''.join(random.choice(possibleCharacters) for i in range(len(target)))
         14 attemptNext = ''

    C:\Users\Phillip\AppData\Local\Enthought\Canopy\App\appdata\canopy- 1.5.1.2730.win-x86_64\lib\site-packages\IPython\kernel\zmq\ipkernel.pyc in <lambda>(prompt)
        362         if content.get('allow_stdin', False):
        363             raw_input = lambda prompt='': self._raw_input(prompt, ident, parent)
    --> 364             input = lambda prompt='': eval(raw_input(prompt))
        365         else:
        366             raw_input = input = lambda prompt='' : self._no_raw_input()

    C:\Users\Phillip\AppData\Local\Enthought\Canopy\App\appdata\canopy 1.5.1.2730.win-x86_64\lib\site-packages\IPython\kernel\zmq\ipkernel.pyc in <module>()

    NameError: name 'HellowWorld' is not defined 

    In [3]: %run "c:\users\phillip\appdata\local\temp\tmpulqoxo.py"

    Enter your target text: What is wrong with this stupid program?
      File "<string>", line 1
        What is wrong with this stupid program?
                         ^
    SyntaxError: invalid syntax