Why not? You can't assume where to. Oh.

Like... [2:2]? No, that makes no sense.

return sequence[0:index]+nuclide+ ???

so what would the last part be? ;p

@JourneymanGeek [index:]

lol

thats smarter than what I did

Yeah?! But is it right?!

I believe so, let me test that ;p

I am proud!!! :DDD

ugh, idle crashed

:OO

Do you want me to test it?

please do

It doesn't like the : for some reason. It thinks it's an Syntax error.

o0

works for me

Huh. Maybe I did something wrong.

you probably missed something, take a good look at the line

return sequence[0:index]+nucleotide+[index:]

I hate the word nucleotide.

ehsy

lol

i used dna1 and dna2

that LOOKS ok

Maybe I need to do sequence[index:]

Let me try.

Works :)

lol

ya ;p

I missed that

Woot!

So the complement of a nucleotide can be achieved through a variable, right? Like G=C

er for that using return will work

since you only need to return one value

if "A"

return "T"

elif "T"

and so on

But return ends the statement. Therefore I should use a variable, right?

well no

since all the module does is take one value, and return another

I mean you COULD do it with a variable

So if if 'A' is incorrect, it moves to elif and doesn't look at return?

@JourneymanGeek Whatever's easiest XD

room topic changed to Python Programming: For those who need help programming, coding and using Python [code-blocks] [programming] [python] [python-2.7] [python3]

room topic changed to Python Programming: For those who need help programming, coding and using Python. [code-blocks] [programming] [python] [python-2.7] [python3]

ya

one line difference

Does this look OK?

  if 'A':
        return 'T'
    elif 'T':
        return 'A'
    elif 'G':
        return 'C'
    elif 'C':
        return 'G'

Hey, return does end it.

All of them return as 'T'.

@JourneymanGeek

the elifs are too indented

Ahhhh. I see

Actually, they aren't.

I'm very sure return ends it. @Mahesh told me ;P

hm

if what is A?

it needs to be if variable == 'A'

>.>

I have no idea how what you just did even works ;p

sdjhfjksgbjkvs

works now?

Hold on, i took a few wrong turns.

Trying to do if Function(parameter) is not a good idea.

@JourneymanGeek No. I tried parameter=nucleotide and then if parameter('A') but it says:

could you paste your code here?

`Traceback (most recent call last):
  File "<pyshell#3>", line 1, in <module>
    get_compliment('A')
  File "<pyshell#2>", line 16, in get_compliment
    if parameter('A'):
TypeError: 'str' object is not callable`

wait. = ?

 def get_compliment(nucleotide):
        '''(str) -> str

        Returns the complement nucleotide of the one in the parameter.

        >>>get_compliment('A')
        'T'
        >>>get_compliment('G')
        'C'
        >>>get_compliment('C')
        'G'
        >>>get_compliment('T')
        'A'
        '''
        parameter=nucleotide
        if parameter('A'):
            return 'T'
        elif parameter('T'):
            return 'A'
        elif parameter('G'):
            return 'C'
        elif parameter('C'):

That is the function --^

    if nucleotide == 'A':
        return 'T'
    elif nucleotide == 'T':
        return 'A'
    elif nucleotide == 'G':
        return 'C'
    elif nucleotide == 'C':
        return 'G'
    else:
        return None

Yeah?

why parameter = nucliotide?

why are you assigning the value nucleotide to parameter then comparing that value with something, when you already assign a value when calling the function?

Because it had an error. I thought that was the answer :P

@JourneymanGeek That's... a very confusing statement. I thought that if I put the value of nucleotide into a variable, it might not get confused and say a string is not callable.

lol

its about as confusing as the code >_>

KISS

You take in a value when you call the function

@JourneymanGeek Kiss to you too? ^o^

you then compare the value you already took to another value

@JourneymanGeek Oh...kay?

no variable assignment needed

@JourneymanGeek Only statement I could understand. Noted.

drop the first line, replace 'paramater' with nucleotide

and you are cooking with gas

@JourneymanGeek nucleotide=nucleotide? That's useless, that's like saying "Apple is apple".

no no

"Eat an apple. By that I mean, apple that is apple."

drop the parameter=nucleotide line

its not needed

@JourneymanGeek I did.

then the REST you replace

@JourneymanGeek Noted :))

get_complimentary_sequence.

Hm.

you already set a value to nuclide when you call def get_compliment(nucleotide):

lol

For get_complimentary_sequence, I would use the thing I just wrote to get the complimentary letter for each one, and slice and replace?

not slice

index?

well might work

lol

I used another method

how would you use slice/index to do this?

-shrug-

lol

flow!

I kind of want to think of 'cut', but then I just never -paste-

lol

well you have a string. You want to look at each charecter , then replace it with something

What fun.

but you can't change a string directly, you would need to assign the output as a variable.

@JourneymanGeek You'll need to help me with this.

ok.. first we'd start with for char in dna:

since we want to run though each charecter in the string

then we need to fund each char's compliment, so in that loop, we run c = get_complement(char)

Just wait, I haven't created the function yet.

but that will only output single charecters, we want a string

lol

do it, you will need it

>_>

@JourneymanGeek Ok...

lol

want me to continue?

Yeah, ty.

when we run c =get_compliment(char) we only get individual charecters

And we need to make them into a string.

so what we'd do is use another variable to do that newdna = newdna + c

but we'd need to set an initial value outside the loop.

so.. putting all that together

  newdna=''
        for char in dna:
            c = get_complement(char)
            newdna = newdna + c

        return newdna

we initialise newdna as a blank value, then run through each charecter in dna, find its compliment, then concatenate its value to newdna, once that is done, we return newdna

^ thats the 'flow'

It says:

Traceback (most recent call last):
  File "<pyshell#18>", line 1, in <module>
    get_complimentary_sequence('AT')
  File "<pyshell#17>", line 15, in get_complimentary_sequence
    c = get_complement(char)
NameError: global name 'get_complement' is not defined

...

check my spelling

Oh. -.-

My spelling is wrong -.-''

lol

idle needs spellcheck ;)

you DO know you can tab-complete functions right?

-.- no

(and yes, I see the 'function' as a mental flowchart ;))

Um, it says 'T' and 'T' only (when 'TA' is there)

hm

@JourneymanGeek That's inspiring. Probably very useful, too. I think of it as instructions :3

are your variables correct?

Here

def get_complementary_sequence(dna):
    '''(str) -> str

    Returns the complementary sequence in a string.

    >>>get_complementary_sequence('AT')
    'TA'
    >>>get_complementary_sequence('AATTCCGG')
    'TTAAGGCC'
    >>>get_complementary_sequence('ACGT')
    'TGCA'
    '''
    newdna=''
    for char in dna:
        c = get_complement(char)
        newdna = newdna + c

        return newdna

we're using different variable schemes

...

indents ;p

your return newdna is in the same loop as the for char in dna

...

Do I need to remove the paragraph?

indent EVERYTHING from newdna = '' to newdna = newdna + c by one tab

OHHH ty

This?

dogwalkingtime, will be gone after the last one

er no

Does return need to be indented also?

Ah. I see. TY

AFK

@JourneymanGeek Thanks for all your help!! Everything is now fine! Enjoy walking your dog. Anytime you need me, I'll try my best to help ^o^

@JourneymanGeek Bye~

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