Adding word

Question

def concatenate(*args):
my_list=[]
for i in args:
new_str= '-'.join(my_list)
my_list.append(i)
print(new_str)
print(concatenate("I", "love", "Python", "!"))
#This is my code for the adding word problem, but the output is “I-love-Python” and a “None” in next line,But the expected output is “I-love-Python-!”Can any one help me with this ?

Answer 1

Pardis Shahabinejad ,
there may still be the issue that the final exclamation mark will not be printed. see my comments in the attached file.
i also have made a suggsetion how the code can be simplified.
https://code.sololearn.com/cukNV1Fv02qG/?ref=app

Answer 2

A function returns `None` when nothing was explicitly returned to the caller. That was why you see `None` in output.
Solution:
Modify concatenate() to return <new_str>

Answer 3

Thanks a lot🙏🏼

Answer 4

Thanks for your help:)