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Python - input v raw input
If you use input, then the data you type is is interpreted as a [b]Python Expression[/b] which means that you end up with gawd knows what type of object in your target variable, and a heck of a wide range of exceptions that can be generated. So you should NOT use input unless you're putting something in for temporary testing, to be used only by someone who knows a bit about Python expressions.
raw_input always returns a string because, heck, that's what you always type in ... but then you can easily convert it to the specific type you want, and catch the specific exceptions that may occur. Hopefully with that explanation, it's a no-brainer to know which you should use. Example ccode = 386Here's an example of that running ... Dorothy:dec07 grahamellis$ python ivrAnd you start getting in to all sorts of issues if you don't realise quickly that one of your variables contains "386" not "ccode" .... (written 2007-12-06 05:16:33) Associated topics are indexed under Y102 - Python - Fundamentals
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Perl, PHP, Python, Tcl, Linux, MySQL, Ruby courses ...Python Script - easy examples of lots of basics All the special characters in HTML ... 10 training days to Christmas. Python - input v raw input Christmas fare in Ljubljana Interactive training, and advancing techniques further The wrong way to put up prices A day in Ljubljana Right up to the top of the City 1694 posts, page by page
Link to page ... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 at 50 posts per pageThis is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price. Link to Ezine home page (for reading). Link to Blogging home page (to add comments). |
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