In pseudo code
seq = "ACTGATCGATTACGTATAGTAGAATTCTATCATACATATATATCGATGCGTTCAT"
...:
...: def finder(seq, target):
...: len_target = len(target)
...: i = 0
...: while i+len_target < len(seq):
...: yield seq[i:i+len_target], i
...: i += 1
Il check per == lo puoi inserire all’interno del finder o fuori.
——
Christian Barra
Python Freelancer // Consultant // Trainer
Board member of the EuroPython Society
www.chrisbarra.xyz
> On 26 Nov 2017, at 10:42, Giuseppe Costanzi <giuseppecosta...@gmail.com>
> wrote:
>
> ciao carlo,
>
> si, interessante ma vorrei iterare la sequenza mano a mano,
>
> stavo pensando a qualcosa tipo
>
> next(iterator, default)
>
> grazie comunque
>
>
>
> On Sun, Nov 26, 2017 at 10:30 AM, Carlo Miron <mi...@python.it> wrote:
>> On Sun, Nov 26, 2017 at 10:20 AM, Giuseppe Costanzi
>> <giuseppecosta...@gmail.com> wrote:
>>
>>> ho una sequenza del tipo
>>> ACTGATCGATTACGTATAGTAGAATTCTATCATACATATATATCGATGCGTTCAT
>>> scorrendola devo trovare una sequenza target GAATTC
>>> ACTGATCGATTACGTATAGTA "GAATTC" TATCATACATATATATCGATGCGTTCAT
>>> quindi dividere la sequenza da G, la prima lettera della sequenza target,
>>> e calcolarmi la lunghezza dei due frammenti risultanti
>>> ACTGATCGATTACGTATAGTAG
>>> e di questa
>>> GAATTCTATCATACATATATATCGATGCGTTCAT
>>
>> qualcosa tipo
>>
>>>>> seq = "ACTGATCGATTACGTATAGTAGAATTCTATCATACATATATATCGATGCGTTCAT"
>>>>> target = "GAATTCT"
>>>>> first, second = seq.split(target, 1)
>>>>> first += target[1]
>>>>> second = target[1:] + second
>>>>> len(first), len(second)
>> (22, 33)
>>
>> ?
>> ㎝
>>
>> --
>> |:**THE 🍺-WARE LICENSE** *(Revision ㊷)*:
>> | <miron@🐍.it> wrote this mail. As long as you retain this
>> | notice you can do whatever you want with this stuff.
>> | If we meet some day, and you think this stuff is worth it,
>> | you can buy me a 🍺 in return. —㎝
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