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Third - RegExp solution in Clear category for First Word by maxnrg
"""You are given a string where you have to find its first word.
When solving a task pay attention to the following points:
There can be dots and commas in a string.
A string can start with a letter or, for example, a dot or space.
A word can contain an apostrophe and it's a part of a word.
The whole text can be represented with one word and that's it.
Example:
first_word("Hello world") == "Hello"
first_word("greetings, friends") == "greetings"
How it is used: the first word is a command in a command line
Precondition: the text can contain a-z A-Z , . '
"""
# v3 - RegExp
import re
def first_word(text: str) -> str:
""" returns the first word in a given text. """
return re.findall(r'[\w\']+', text)[0]
if __name__ == '__main__':
print("Example:")
print(first_word("Hello world"))
# These "asserts" are used for self-checking and not for an auto-testing
assert first_word("Hello world") == "Hello"
assert first_word(" a word ") == "a"
assert first_word("don't touch it") == "don't"
assert first_word("greetings, friends") == "greetings"
assert first_word("... and so on ...") == "and"
assert first_word("hi") == "hi"
assert first_word("Hello.World") == "Hello"
print("Coding complete? Click 'Check' to earn cool rewards!")
Dec. 16, 2019
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