how to split a string into diferent segments of 2 words where the first word of the second segment repeats the last word of the first

Question

I am trying to figure out how to split a string into segments of 2 words where the first word of the second segment repeats the last word of the first. (in Python 2)For example, "hi i am a human named joe norman" should slit into "hi i", "i am", "am joe", "joe norman". I have the following code:

txt = raw_input("")

newtxt = txt.split(" ")

the problem with this is that it splits txt by each space, not every other. I would like to use no libraries. Thank you.

Answer 1

Use zip:

t = "hi i am a human named joe norman"
words = t.split()

result = list(zip(words, words[1:]))

for first, second in result:
    print("{} {}".format(first, second))

Output

hi i
i am
am a
a human
human named
named joe
joe norman