How to separate a string into 2 list of lists - python-3.x

Question

I got this string:
\n
\n
N\tO\tHP\tM\tD\tU\tI\tN\tO\n
E\tS\tA\tE\tI\tT\tL\tN\tI\tN\n
N\tP\tN\tN\tN\tG\tAO\tD\tC\n
\n
\n
PERMANENTE
PETTINE
\n
\n
actually if you looks at original string ,you cannot see the \t and \n ,so I just edited to better understanding.
What is I'm trying to do is separate to 2 different list of lists,for example:
lists1 = [[NOHPMDUINO][ESAEITLNIN][NPNNNGAODC]]
lists2 = [[PERMANENTE][PETTINE]]
I tried to use many methods to solve this, but without success.
at first I removed the new lines at the beginning with .strip('\n') method, and I tried to use replace , but I don't know how to make it right.
Thank you zsomko and snakecharmerb,
Using the method of zsomko and adding strip() to remove the newline at the beginning , here is the loop that I did to divide to 2 variables:
var = True
for line in t:
if line !=['']:
if var:
group1.append(line)
else:
group2.append(line)
else:
var = False
I hope this will help to someone :) If somebody has better solution ,more efficient ,I would like to hear

Answer 1

First eliminate the tabs and split the string into lines:
lines = [line.replace('\t', '') for line in string.splitlines()]
Then the following would yield the list of lists in the variable groups as expected:
groups = []
group = []
for line in lines:
if group and not line:
groups.append(group)
group = []
elif line:
group.append(line)

Answer 2

You can break the string into separate lines using its splitlines method - this will give you a list of lines without their terminating newline ('\n') characters.
Then you can loop over the list and replace the tab characters with empty strings using the str.replace method.
>>> for line in s.splitlines():
... if not line:
... # Skip empty lines
... continue
... cleaned = line.replace('\t', '')
... print(cleaned)
...
NOHPMDUINO
ESAEITLNIN
NPNNNGAODC
PERMANENTE
PETTINE
Grouping the output in lists of lists is a little trickier. The question doesn't mention the criteria for grouping, so let's assume that lines which are not separated by empty lines should be listed together.
We can use a generator to iterate over the string, group adjacent lines and emit them as lists like this:
>>> def g(s):
... out = []
... for line in s.splitlines():
... if not line:
... if out:
... yield out
... out = []
... continue
... cleaned = line.replace('\t', '')
... out.append([cleaned])
... if out:
... yield out
...
>>>
The generator collects lines in a list (out) which it yields each time it finds a blank line and the list is not empty; if the list is yielded it is replaced with an empty list. After looping over the lines in the string it yields the list again, if it isn't empty, in case the string didn't end with blank lines.
Looping over the generator returns the lists of lists in turn.
>>> for x in g(s):print(x)
...
[['NOHPMDUINO'], ['ESAEITLNIN'], ['NPNNNGAODC']]
[['PERMANENTE'], ['PETTINE']]
Alternatively, if you want a list of lists of lists, call list on the generator:
>>> lists = list(g(s))
>>> print(lists)
[[['NOHPMDUINO'], ['ESAEITLNIN'], ['NPNNNGAODC']], [['PERMANENTE'], ['PETTINE']]]
If you want to assign the result to named variables, you can unpack the call to list:
>>> group1, group2 = list(g(s))
>>> group1
[['NOHPMDUINO'], ['ESAEITLNIN'], ['NPNNNGAODC']]
>>> group2
[['PERMANENTE'], ['PETTINE']]
but note to do this you need to know the number of lists that will be generated in advance.