CODEWITHSUNDEEP
pythonpython-3.x
Komi Sla
Komi Sla

Reputation: 41

How to convert a complex list to string in Python?

I have this complex list:

boundarylist = [('eː', 'n'), ('a', 'k'), ('a', 's')]

I want to convert boundarylist to a string, so that I can store it in an external .txt file.

boundarystring = ' '.join(boundarylist)

does not work. The output should be something like this: 

boundarystring = 'eːn ak as' #seperated by \s or \n

I tried these algorithms suggested in “”.join(list) if list contains a nested list in python?, but it returns 'eːnakas' respectively 'eː n a k a s': 

import itertools
lst = [['a', 'b'], ['c', 'd']]
''.join(itertools.chain(*lst))
'abcd'

and

''.join(''.join(inner) for inner in outer)

Upvotes: 3

Views: 466

Answers (4)

Anand Tripathi
Anand Tripathi

Reputation: 16146

We can use reduce method for it. 

boundarylist = [('eː', 'n'), ('a', 'k'), ('a', 's')]
print reduce(lambda x,y:"".join(x) + " " + "".join(y) , boundarylist)

Output

'eːn ak as'

How this works

Here we are actually joining the tuple that is inside the list using .join() method and then using reduce() function we are taking two arguments and concatenating them with " " space character that will satisfy your use case.

Upvotes: -1

Zack Atama
Zack Atama

Reputation: 81

here's what I tried, iterated through the list then through the tuple; 

boundarylist = [('eː', 'n'), ('a', 'k'), ('a', 's')]
new_list = []
for tuple_ in boundarylist:
   for i in tuple_:
      new_list.append(i)
boundarylist = ' '.join(new_list)
print(boundarylist)

Upvotes: -1

Austin
Austin

Reputation: 26039

One way:

boundarylist = [('eː', 'n'), ('a', 'k'), ('a', 's')]

print(' '.join([x+y for x, y in boundarylist]))
# eːn ak as

Upvotes: 2

Sunitha
Sunitha

Reputation: 12015

You need to first join the tuples in your list

>>> boundarylist = [('eː', 'n'), ('a', 'k'), ('a', 's')]
>>> ' '.join([''.join(w) for w in boundarylist])
'eːn ak as'
>>>

Upvotes: 7

Related Questions