Extract the numeric and alphabetic part from an alphanumeric string

[Sandhya Prabhakaran]

Hi,

I have a string as str='123ACTGAAC'.

I need to extract the numeric part from the alphabetic part which I
did using
>>>numer=re.findall(r'\d+',str)
>>>numer
123

To get the alphabetic part, I could do
>>>alpha=str.replace('123','')
>>>alpha
ACTGAAC
But when I give
>>>alpha=str.replace(numer,'')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: expected a character buffer object

How do I blank out the initial numeric part so as to get just the
alphabetic part. The string is always in the same format.

Please help.

Regards,
Sandhya