This a test for cut a phrase with a limit, without cutting words

cut_string.py

# Variables
test = u'Hola a todo el mundo' # Enter a phrase
lenght = 10 # Enter a number

test_list = test.split()
i = len(test_list)

while i<=len(test_list):
    phrase = " ".join(list[0:i])
    if len(phrase)<lenght:
        print(phrase)
        break
    i-=1