How to extract the first and final words from a string?

Question

I have a small problem with something I need to do in school...

My task is the get a raw input string from a user ( text = raw_input() ) and I need to print the first and final words of that string.

Can someone help me with that? I have been looking for an answer all day...

Answer 1

You have to firstly convert the string to list of words using str.split and then you may access it like:

>>> my_str = "Hello SO user, How are you"
>>> word_list = my_str.split()  # list of words

# first word  v              v last word
>>> word_list[0], word_list[-1]
('Hello', 'you')

From Python 3.x , you may simply do:

>>> first, *middle, last = my_str.split()

Answer 2

If you are using Python 3, you can do this:

text = input()
first, *middle, last = text.split()
print(first, last)

All the words except the first and last will go into the variable middle .

Answer 3

Let's say x is your input. Then you may do:

 x.partition(' ')[0]
 x.partition(' ')[-1]

Answer 4

你会这样做：

print text.split()[0], text.split()[-1]

Answer 5

Some might say, there is never too many answer's using regular expressions (in this case, this looks like the worst solutions..):

>>> import re
>>> string = "Hello SO user, How are you"
>>> matches = re.findall(r'^\w+|\w+$', string)
>>> print(matches)
['Hello', 'you']

Answer 6

Simply pass your string into the following function :

def first_and_final(str):
    res = str.split(' ')
    fir = res[0]
    fin = res[len(res)-1]
    return([fir, fin])

Usage :

first_and_final('This is a sentence with a first and final word.')

Result :

['This', 'word.']

Answer 7

You can use .split and pop to retrieve the words from a string. use "0" to get the first word and "-1" for the last word.

string = str(input())
print(string.split().pop(0))
print(string.split().pop(-1))