Whats wrong with this code it gives error My_list = [1,2,3,4,5] Number=0 for Number in My_list: My_list = My_list(Number**2) Print My_list

Answer 1

Maybe you want listing the square of numbers in the array?
If that's:

My_list = [1,2,3,4,5]
for Number in My_list:
Number=Number**2
print(My_list)

Or:

My_list = [1,2,3,4,5]
for index in range(len(My_list)):
My_list[index] = My_list[index]**2
print(My_list)

WARNINGS:
- "Print" and "print" doesn't are the same... so the "print" only work ( but you can define a custom function named "Print" )
- become accustomed to use parenthesis with print, because in Python 3.x they are required ( and accepted in previous versions, even not required )

[ EDIT ]
Only the second solution work as expected ( in the first, we do operate on value copy, so the array isn't modified ^^ )

Answer 2

you need to use index to access to your array.
Things like this :
" My_list = My_list(Number**2)"

are not posible.

Answer 3

Ok :)

Well so, my supposition of application of power of 2 for each item was right :P and the soluce previously posted ;)

Answer 4

Almost in fact: only the second solution is working... after little edit ( forgot **2 )

Answer 5

Yes, probably :P
( I've edited the post with the solution, with explanation on why the first doesn't work )

Answer 6

It's quiet not surprising than the Python interpretor fails, because an human itself will have difficulty to understand what this code is supposed to do :P
So what is the behaviour expected ?

Answer 7

YuHai says : "what output do you suppose to be?"

Biswascoder finally answers: O/p : [2,81,9,64,25,49]

But still problems:
- your input count 5 elements and your output 6: is that right?
- what's the f**king mathematical relation between input and output?

Answer 8

7 ???
in your initial ( input ) list?
So, like this:
My_list = [1,2,3,4,5,7]
?

And what about the mathematical operation(s) you search to obtain ?

Answer 9

No, I mean the index of the array.

array[n]

n is the index.

Answer 10

Use this
my_list = [1,2,3,4,5]
new_list = [x**2 for x in my_list]

List comprehension is a very powerful technique in Python

Answer 11

isnt the output supposed to be [1,4,9,16,25,49]
not [2,4,9,16,25,49]

Answer 12

So should i add
Number = Number+1

Answer 13

O/p : [2,81,9,64,25,49]

Answer 14

what output do you suppose initially?

Answer 15

Sorry visph i forgot to add 7 in my list

Answer 16

Actully i am still working on it on my laptop there i am using different items
So let me clear
I/p : [1,2,3,4,5,7]
O/p : [2,4,9,16,25,49]