为什么不能导入此模块？ 蟒蛇

Question

I'm extremely new to programming and I'm trying to self teach myself so sorry if I have some stupid questions.

I've been trying to follow "Python Programming: An introduction to computer science" by John Zelle (2nd edition). Unfortunately, I got stuck on a part in chapter one... I don't understand what I'm doing wrong because I think I'm following his instructions exactly. Basically, he shows us how to make our first module in IDLE and how to import it in a python shell.

I literally typed down what the book had down. I decided to use IDLE because the book says its standard. I named the file chaos.py as instructed. This is the module:

>>> # File: chaos.py
>>> # A simple program illustrating chaotic behavior.
>>> def main():
    print("This program illustrates a chaotic function")
    x = eval(input("Enter a number between 0 and 1: "))
    for i in range(10):
        x = 3.9 * x * (1 - x)
        print(x)


>>> main()

I would always get this result when trying to import from a Python shell(the book says this would always work):

>>> import chaos
Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    import chaos
  File "C:\Python34\lib\site-packages\chaos.py", line 1
    Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:43:06) [MSC v.1600 32 bit (Intel)] on win32
             ^
SyntaxError: invalid syntax

I tried putting the module in site-packages but I would still get the same result. Can anyone tell me what I'm doing wrong? Thanks!

    Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:43:06) [MSC v.1600 32 bit (Intel)] on win32
    Type "copyright", "credits" or "license()" for more information.
    >>> # File: chaos.py
    >>> # A simple program illustrating chaotic behavior.
    >>> def main():
    print("This program illustrates a chaotic function")
    x = eval(input("Enter a number between 0 and 1: "))
    for i in range(10):
    x = 3.9 * x * (1 - x)
    print(x)
    >>> main()

Answer 1

The actual contents of chaos.py should be something like. What you did was to copy the actual terminal session prompts, >>> stuff, as well, I think.

def main():
    print("This program illustrates a chaotic function")
    x = eval(input("Enter a number between 0 and 1: "))
    for i in range(10):
        x = 3.9 * x * (1 - x)
        print(x)

main()

Now, though this runs, it still had some errors in syntax about the input line. I changed it to:

x = input("Enter a number between 0 and 1: ")

Additional info:

You need to show the actual contents of chaos.py. Things like Python 3.4.3 have no business whatsoever being in the file . If they are in the file, then I fully expect an error like

File "C:\Python34\lib\site-packages\chaos.py", line 1
    Python 3.4.3

That is a syntax error, not a "can't find file to import" error.

Since you are in a Windows prompt anyway, why don't you go to the directory where chaos.py is sitting and just type **python chaos.py" What does that do?

Having put the exact following in my chaos.py

Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:43:06) [MSC v.1600 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.

and typing:

python chaos.py

I then get this as an error, which looks pretty much the same as yours:

  File "chaos.py", line 1
    Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:43:06) [MSC v.1600 32 bit (Intel)] on win32
             ^
SyntaxError: invalid syntax

ie post the contents of chaos.py, not the screenshots of your session and errors. Post the error separately. chaos.py should not have Python or >>> anywhere in it. All of your posts so far contain terminal session stuff or Python stuff, which are not valid python code.