Useful input trick

15 Years Ago AutoPython 6 569 Views

!USING PYTHON 3.1!

Hello DaniWeb! Today I'm going to teach you a cool variable trick that I learned. So here's an example:

a, b, c = input('?x?x?: ').split('x')

Now let's input something like:

>>> a, b, c = input('?x?x?: ').split('x')
?x?x?: 1x2x3

Now, variable 'a' is set to 1, variable 'b' is set to 2, variable 'c' is set to 3. I hope I explained that well enough. It can be used in various sections. NOTE: Because you used 3 variables, you have to have three answers divided by the character you split with. If you only used 'a, b' you would only be able to do '1x2'.

Now lets use another example using more common names:

breakfast, lunch, dinner = input('breakfast&lunch&dinner').split('&')

Now if we run this in idle the result is:

>>> breakfast, lunch, dinner = input('breakfast&lunch&dinner: ').split('&')
breakfast&lunch&dinner: sausage&pizza&chicken

Now:

breakfast = sausage
lunch = pizza
dinner = chicken

That's going to be it for this tutorial! Hope you find it useful!

python

Gribouillis commented: nice +2

e-papa commented: Good. +3

BustACode commented: Good stuff. Thanks. +1

woooee 814 Nearly a Posting Maven

15 Years Ago

You should use this with a try/except (within is while) since anyone would enter more or fewer characters at some time.

Gribouillis 1,391 Programming Explorer

15 Years Ago

nice, it looks like a kind of 'scanf' for python.

AutoPython 5 Junior Poster

15 Years Ago

Thanks for the feed back. I would edit it and show an example with the try/except thing, but I've already used all my edits :(.

Edited 15 Years Ago by AutoPython because: n/a

Gribouillis 1,391 Programming Explorer

15 Years Ago

That's a problem with these code snippet. In the active state snippets, people can update their code long after the initial post.

lllllIllIlllI 178 Veteran Poster

15 Years Ago

Wow a tutorials, i havent seen one of these posted for aages...

AutoPython 5 Junior Poster

15 Years Ago

Yeah, I thought the same thing. I want to post more tutorials here. It's just that I don't have to many good subjects to post on.

e-papa 13 Posting Pro in Training

13 Years Ago

This is good, it will really reduce the number of input() functions i use in my programs.
Thanks...

vinodvinu -3 Light Poster

10 Years Ago

Thank you for this tip.

TrustyTony commented: Thanks not by post, by upvote, please! -3

BustACode 15 Light Poster

9 Years Ago

Coincidentally how to do a multi-input was rattling around my head for the past two weeks. Tonight, I click on turtorials for S & G, and bam!, there's the answer.

Thanks.

111100/11000

9 Years Ago

awesome
but shouldn't that be reversed

breakfast&lunch&dinner: sausage&pizza&chicken

breakfast&lunch&dinner: sausage&chicken&pizza

than

breakfast = sausage
lunch = chicken
dinner = pizza

111100/11000

9 Years Ago

you can also do:

x,y,z = input('Enter 3 numbers: ')

than if you enter:

Enter 3 numbers: 567
x=5
y=6
z=7

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