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Python

Posted by Alex Arzamendi
Alex Arzamendi
10,042 Points

Watch me join a list of integres into a string :)

Hi guys!

He is right when he says that by default you can't simply join a list of integers, but with the powers of type casting(or in this case converting) and list comprehensions(I am pretty sure we will see it later) we can do some crazy things!

Check it out!

string_holder = ""
number_list = [1, 2, 3]

# now for the comprehension

string_holder = " ".join(str(i) for i in number_list)


# now to verify

print(string_holder)

# and the result is >>> "1 2 3"

I love Python

1 Answer

Alexander Davison
Alexander Davison
65,469 Points
Alexander Davison
Alexander Davison
65,469 Points

That's an interesting thought!

I never thought of doing that (I always liked using list comprehensions).

I just thought of a way to do it using the map function, which is probably a better choice for this problem:

string_holder = ""
number_list = [1, 2, 3]

# now for the comprehension

string_holder = " ".join(list(map(str, number_list)))

# now to verify

print(string_holder)

# and the result is >>> "1 2 3"

Just a little thing I thought of :P

Using the map function in this case should make the code a little bit less. :)

Try my code in the Console.

~Alex

Alex Arzamendi
Alex Arzamendi
10,042 Points

Wonderful Alex! (yay another Alex! haha)

It is a great solution! Using a more functional approach! I really dig it

And I love list comprehensions, it is arguably one of my favorite features in Python!

Alexander Davison
Alexander Davison
65,469 Points

Map may be a teeny faster in some cases (when you're NOT making a lambda). List comprehensions may be faster in other cases. Pythonists consider them more direct and clearer.

In this case I believe mapping might be a little faster, and also a little more clear (in this example) :)