[Tutor] creating files with python and a thanks

[Sheila King]

On Sun, 17 Feb 2002 21:48:16 +0000, Eve Kotyk <e.kotyk@shaw.ca>  wrote
about Re: [Tutor] creating files with python and a thanks:

> Thank you.  This is very helpful, but I'm still not quite there.  Here
> are my results from an Interpreter session.  
> 
> >>>def gather_data():
>   items = raw_input("Add food item: ") 
>   portion = input("Enter number of portions: ")
>   cal_portion = input("Enter calories per portion: ")
>   output = [items, portion, cal_portion]
>   #return items,portion,cal_portion
>   f = open('myfile.txt', 'w')
>   f.write(str(output))
>   f.close() 
>   
> >>> gather_data()
> Add food item: cumquats
> Enter number of portions: 10
> Enter calories per portion: 50
> Traceback (innermost last):
>   File "<pyshell#78>", line 1, in ?
>     gather_data()
>   File "<pyshell#75>", line 9, in gather_data
>     f.write(output)
> TypeError: read-only buffer, list

I have no idea why it is giving you difficulty. It works for me:

Python 2.2 (#28, Dec 21 2001, 12:21:22) [MSC 32 bit (Intel)] on win32
Type "copyright", "credits" or "license" for more information.
IDLE 0.8 -- press F1 for help
>>> def gather_data():
	items = raw_input("Add food item: ")
	portion = input("Enter number of portions: ")
	cal_portion = input("Enter calories per portion: ")
	output = [items, portion, cal_portion]
	f = open('myfile.txt', 'w')
	f.write(str(output))
	f.close()

	
>>> gather_data()
Add food item: cumquats
Enter number of portions: 10
Enter calories per portion: 50
>>> 

What Python Shell are you using? What operating system? 

-- 
Sheila King
http://www.thinkspot.net/sheila/

"When introducing your puppy to an adult cat,
restrain the puppy, not the cat." -- Gwen Bailey,
_The Perfect Puppy: How to Raise a Well-behaved Dog_