如何将字符串拆分为连续的子字符串，例如：string_inputs: IN PYTHON3

Question

how can I split strings into continuous sub strings eg: string_inputs:

AAAATTTT ATATATAT

output_needed:

AA,AA,AA,AT,TT,TT,TT

Answer 1

string_inputs = "AAAATTTTATATATAT"

#Note the `len(string_inputs) - 1` in the range; do according to what you desire as your output
d_out = [string_inputs[i:i+2] for i in range(0, len(string_inputs) - 1)]

d_out = ['AA', 'AA', 'AA', 'AT', 'TT', 'TT', 'TT', 'TA', 'AT', 'TA', 'AT', 'TA', 'AT', 'TA', 'AT']

Answer 2

You can obtain every two substrings with zip() here:

>>> string = 'AAAATTTTATATATAT'
>>> ','.join(x + y for x, y in zip(string, string[1:]))
'AA,AA,AA,AT,TT,TT,TT,TA,AT,TA,AT,TA,AT,TA,AT'

This is also another way:

>>> ','.join(map(''.join, zip(string, string[1:])))
'AA,AA,AA,AT,TT,TT,TT,TA,AT,TA,AT,TA,AT,TA,AT'

Or even something like this:

>>> ','.join(map(lambda x, y: x + y, string, string[1:]))
'AA,AA,AA,AT,TT,TT,TT,TA,AT,TA,AT,TA,AT,TA,AT'

Answer 3

This does what you're looking for.

string = "AAAATTTTATATATAT"
step = 2
split = [string[i:i+step] for i in range(0, len(string), step)]
print(",".join(split))

step is the chunk you want to split your string into. And the last line joins it with the , as in your example to give you the final output AA,AA,TT,TT,AT,AT,AT,AT