
Ok I'm really lost (I'm new to python) how to use the reverse function.
I made a little program which basically the a, b, c, d, e which I have
listed below and basically I want it th result to be printed reverse so
instead doing "print e, d, c, b, a", I'd like to use the reverse
function
Can someone give pointersguidelines / on how to do it? 
a = str(math.sqrt(math.fabs(x1)) + 5*((math.pow(x1,3))))

b = str(math.sqrt(math.fabs(x2)) + 5*((math.pow(x2,3))))

c = str(math.sqrt(math.fabs(x3)) + 5*((math.pow(x3,3))))

d = str(math.sqrt(math.fabs(x4)) + 5*((math.pow(x4,3))))

e = str(math.sqrt(math.fabs(x5)) + 5*((math.pow(x5,3))))

Thanks in advance  
Share:

Use the list's reverse() function. The only thing to keep in mind is
that it will reverse inplace.
Here is an example:

In [1]: l=[1,2,3]
In [2]: l.reverse()
In [3]: l
Out[3]: [3, 2, 1]

So you could accumulate your results in a list then apply reverse() on
it.
Hope this helps,
Nick Vatamaniuc
frankie_85 wrote:
Ok I'm really lost (I'm new to python) how to use the reverse function.
I made a little program which basically the a, b, c, d, e which I have
listed below and basically I want it th result to be printed reverse so
instead doing "print e, d, c, b, a", I'd like to use the reverse
function
Can someone give pointersguidelines / on how to do it?

a = str(math.sqrt(math.fabs(x1)) + 5*((math.pow(x1,3))))

b = str(math.sqrt(math.fabs(x2)) + 5*((math.pow(x2,3))))

c = str(math.sqrt(math.fabs(x3)) + 5*((math.pow(x3,3))))

d = str(math.sqrt(math.fabs(x4)) + 5*((math.pow(x4,3))))

e = str(math.sqrt(math.fabs(x5)) + 5*((math.pow(x5,3))))

Thanks in advance
  
Something like this? 
foo = [x1,x2,x3,x4,x5]

bar = [math.sqrt(math.fabs(x))+5*math.pow(x,3) for x in foo]

bar.reverse()

print bar

frankie_85 wrote:
Ok I'm really lost (I'm new to python) how to use the reverse function.
I made a little program which basically the a, b, c, d, e which I have
listed below and basically I want it th result to be printed reverse so
instead doing "print e, d, c, b, a", I'd like to use the reverse
function
Can someone give pointersguidelines / on how to do it?

a = str(math.sqrt(math.fabs(x1)) + 5*((math.pow(x1,3))))

b = str(math.sqrt(math.fabs(x2)) + 5*((math.pow(x2,3))))

c = str(math.sqrt(math.fabs(x3)) + 5*((math.pow(x3,3))))

d = str(math.sqrt(math.fabs(x4)) + 5*((math.pow(x4,3))))

e = str(math.sqrt(math.fabs(x5)) + 5*((math.pow(x5,3))))

Thanks in advance
  
"frankie_85" <st******@gmail.comwrites:
I made a little program which basically the a, b, c, d, e which I
have listed below and basically I want it th result to be printed
reverse so instead doing "print e, d, c, b, a", I'd like to use the
reverse function
As was pointed out before, your assignment requires you to use a
list. You're using completely distinct names instead of storing these
sequences in a container. Read your course notes again, paying
attention to "containers" and especially "lists".

\ "For of those to whom much is given, much is required."  
`\ John F. Kennedy 
_o__) 
Ben Finney   
If you wanted to keep the original list intact, you could do... 
foo = [x1,x2,x3,x4,x5]

bar = [math.sqrt(math.fabs(x))+5*math.pow(x,3) for x in foo]

bar_reversed = reversed(bar)

On Oct 29, 4:23 pm, "Murali" <gmkrishn.u...@gmail.comwrote:
Something like this?

foo = [x1,x2,x3,x4,x5]

bar = [math.sqrt(math.fabs(x))+5*math.pow(x,3) for x in foo]

bar.reverse()

print bar

frankie_85 wrote:
Ok I'm really lost (I'm new to python) how to use the reverse function.
I made a little program which basically the a, b, c, d, e which I have
listed below and basically I want it th result to be printed reverse so
instead doing "print e, d, c, b, a", I'd like to use the reverse
function
Can someone give pointersguidelines / on how to do it?

a = str(math.sqrt(math.fabs(x1)) + 5*((math.pow(x1,3))))

b = str(math.sqrt(math.fabs(x2)) + 5*((math.pow(x2,3))))

c = str(math.sqrt(math.fabs(x3)) + 5*((math.pow(x3,3))))

d = str(math.sqrt(math.fabs(x4)) + 5*((math.pow(x4,3))))

e = str(math.sqrt(math.fabs(x5)) + 5*((math.pow(x5,3))))

Thanks in advance
  
frankie_85 wrote:
Ok I'm really lost (I'm new to python) how to use the reverse function.
I made a little program which basically the a, b, c, d, e which I have
listed below and basically I want it th result to be printed reverse so
instead doing "print e, d, c, b, a", I'd like to use the reverse
function
You can use extended slice operators http://www.python.org/doc/2.3.5/what...onslices.html [1]
This function call should do what yo expect
print [e, d, c, b, a][::1]
[1] Does anyone know where to find a comprehensible description of
enhanced slices in the Python docs besides an an aged "What's new?"
column? Or is it intended that newbies read this http://docs.python.org/ref/slicings.html ?   This discussion thread is closed Replies have been disabled for this discussion. Similar topics
35 posts
views
Thread by Raymond Hettinger 
last post: by

59 posts
views
Thread by Raymond Hettinger 
last post: by

31 posts
views
Thread by Raymond Hettinger 
last post: by

14 posts
views
Thread by Raymond Hettinger 
last post: by

8 posts
views
Thread by rh0dium 
last post: by

41 posts
views
Thread by rick 
last post: by
 
15 posts
views
Thread by Alex Snast 
last post: by

1 post
views
Thread by Chris Rebert 
last post: by
          