The code should be in Python

Write a function that given a text string outputs a dict mapping words to corresponding spans.

For example, given input text='it is what it is', the output should be the following dict:

{

'it': [Span(text='it is what it is', start_pos=0, end_pos=2), Span(text='it is what it is', start_pos=11, end_pos=13)],

'is': [Span(text='it is what it is', start_pos=3, end_pos=5), Span(text='it is what it is', start_pos=14, end_pos=16)],

'what': [Span(text='it is what it is', start_pos=6, end_pos=10)]

}

Use the code from lecture 3 (copied below for your reference) as a part of your code.

import typing

class Span(typing.NamedTuple):

"""

A representation of a substring in a shared text string.

text[start_pos:end_pos] will return the actual substring.

"""

text: str

start_pos: int

end_pos: int

def get_substring(self):

return self.text[self.start_pos:self.end_pos]

s = Span(text, 0, 11)

def get_word_spans(text): spans = [] start_pos = 0 for i, char in enumerate(text): if char == ' ': spans.append(Span(text, start_pos=start_pos, end_pos=i)) start_pos = i + 1 if start_pos < len(text): spans.append(Span(text, start_pos, len(text))) return spans

get_word_spans(text)