Concatenate string parameters with Python

Question

Am trying to implement a concatenation of strings in python, these strings are passed into the function as multiple parameters via a tuple...I just quite can't figure out how to process multiple string parameters and use join method to put a - delimiter between the strings. For example when i pass values I, Love,Python, am expecting to see I-Love-Python.. Check out below

##Define a function that takes multiple string arguments
def concatenate(*args):
         #Got a problem processing the tuple elements and append delimiter - to the end of each word
         #Tried using a set with its add method but it didn't work
          u=len(args)#Get the length of the arguments tuple
          myarray={0}#initialize a new set to length 0
          for k in range(0, u):
            myarray.add(args[k]+"-")#append delimiter for every tuple member
             return myarray
        
##call concatenate with parameters and print
print(concatenate("I","Love","Python"))

The key with `join` is that it's a method on the delimiter, which in this case is `'-'`. Hence: `return '-'.join(args)` — Samwise, Mar 26 '21 at 15:31
Are you aware that this directly works as ``"-".join(("I","Love","Python"))``? — MisterMiyagi, Mar 26 '21 at 15:31
Please [edit] your question to properly format the code. Right now, it cannot even run due to a SyntaxError. — MisterMiyagi, Mar 26 '21 at 15:33
@Samwise, Thanks so much, your comment worked without a hich :)) — , Mar 26 '21 at 15:38

score 1 · Answer 1 · answered Mar 30 '21 at 13:36

1

Change your code as shown below:

##Define a function that takes multiple string arguments
def concatenate(*args):
    return "-".join(args)
        
##call concatenate with parameters and print
print(concatenate("I","Love","Python"))

OUTPUT:

'I-Love-Python'

answered Mar 30 '21 at 13:36

Bhavin Kariya

79
3

Hey, this was answered in a comment – Mar 31 '21 at 13:54

Chris · Answer 2 · 2022-08-24T14:00:07.770

As noted in the comments section above, you can simply use Python's built-in string function, i.e., .join(), to concatenate multiple string parameters separated by a delimiter (in this case, that is -). Example:

s = '-'.join(['I','Love','Python'])
print(s)
# I-Love-Python

Note: if you have non-string attributes, you have to convert those to strings first. For example:

points = 3
s = '-'.join(['Each','player', 'has', str(points),'points'])
print(s)
# Each-player-has-3-points

If you need to do this in a function that expects a number of arguments (i.e., *args), then simply return '-'.join(args). Again, remember to convert any non-string arguments first.

This doesn't seem to add anything over the existing answer, does it? Dealing with non-string arguments seems superfluous when the question explicitly doesn't need that case. — MisterMiyagi, Aug 24 '22 at 08:16

Concatenate string parameters with Python

2 Answers2