python help

[oliverjrose99]

Hi

I have got a raspberry pi and want to start making programs on it and python is installed as default so i started there.

i was doing python on code academy and had to use .isalpha, is this still in the latest version because i know raw_input was change to input.

Can someone please put some example code of using loop/repeat

Is there a shorter way of doing say

If num == "1" or "2" or "3" or "4:

I would be very greatful as i am learing from scratch

Thanks

[oliverjrose99]

Hi

I have got a raspberry pi and want to start making programs on it and python is installed as default so i started there.

i was doing python on code academy and had to use .isalpha, is this still in the latest version because i know raw_input was change to input.

Can someone please put some example code of using loop/repeat

Is there a shorter way of doing say

If num == "1" or "2" or "3" or "4:

I would be very greatful as i am learing from scratch

Thanks

[Guest GRRigger]

first learn about list and range functions

http://learnpythonthehardway.org/

[sabot]

Try a book like this: http://www.amazon.com/Python-Day-basics-coding-ebook/dp/B00C2STEIC/ref=sr_1_1?ie=UTF8&qid=1377876464&sr=8-1&keywords=python

[JORDANonPC]

please don't double post or triple post for that matter

[rashdanml]

http://docs.python.org/2/tutorial/controlflow.html

 

Read through the Python documentation - they're beyond excellent. Dive into Python is also excellent: http://www.diveintopython.net/toc/index.html - 100% free.

[LibeRatioNZzXx]

Hi

I have got a raspberry pi and want to start making programs on it and python is installed as default so i started there.

i was doing python on code academy and had to use .isalpha, is this still in the latest version because i know raw_input was change to input.

Can someone please put some example code of using loop/repeat

Is there a shorter way of doing say

If num == "1" or "2" or "3" or "4:

I would be very greatful as i am learing from scratch

Thanks

Hi and welcome to the forum!

 

I am not sure if Raspberry Pi programming is anything different than stock but you can use a loop to test if a string is equal to several possible outcomes. You can do it using a for loop, the structure of it is

"for (enter the name of a string here) in range (start of range, end of range)". This is perfect for what you're looking for as the cycle counts up in ones and you can use this cycle counter by the name of the string. Here below is an example code of pretty much exactly what you'll want.

for counter in range (1,5):    if num==counter:        #code of what to do here        break

You need the end of the range to be 1 higher than what you want it to end on as it will cycle up to one below the number (someone correct me if I'm wrong, but that's how it treats the cycle number). The break feature is not necessary but will make things more efficient if you are comparing it to say 100 numbers. I will tell you however it is not shorter for the program just simpler than you writing it all out!

 

Good luck with your Python, if you need more help or any in the future just PM me and I'll try to help!

 

EDIT:

I've just realized you said its in an outdated version of Python, if it doesn't support for loops then sorry my bad, but if you can use while I can show you how to do it with that.