Python: Append to an empty string

Question

I'm working on a project, currently, and I would like to add characters/gr

barfoo = ""
# Something that adds 'hel' to barfoo?
# Something that adds 'lo' to barfoo?
print(barfoo)
> 'hello'

How would I do such a thing? Note that I am aware of adding it to a list and simply 'condensing' it, but I would like to know if there is an easier method.

You could initialise it with an empty string barfoo = "", which would result in hi after appending h and i. However, by assigning the empty string to the variable barfoo, you are defining the variable. — blacklwhite
– blacklwhite, Commented Jun 12, 2018 at 22:52
I think "I want to initialize a string but not define it" is xXIronmanXx's way of saying that he wants "an empty string" (or initialize barfoo to an empty string). — AGN Gazer
– AGN Gazer, Commented Jun 12, 2018 at 22:55
Strings are immutable. You can reassign what a name points to, but not append to a string. — Jan Christoph Terasa
– Jan Christoph Terasa, Commented Jun 12, 2018 at 23:36

Ignacio Vazquez-Abrams · Accepted Answer · 2018-06-12 22:45:06Z

5

Either start with an empty string and concatenate, or start with an empty list and join.

barfoo = ''
barfoo += 'h'
barfoo += 'i'
print(barfoo)

...

barfoo = []
barfoo.append('h')
barfoo.append('i')
print(''.join(barfoo))

answered Jun 12, 2018 at 22:45

Ignacio Vazquez-Abrams

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2 Comments

watcher Over a year ago

I'm sorry, but I thought += and -= was for numbers only

Ignacio Vazquez-Abrams Over a year ago

@xXIronmanXx: They are for any type that implements either them or + and -.

PixelEinstein · Accepted Answer · 2018-06-12 22:45:19Z

2

Here is an example of what you are trying to achieve:

barfoo = ""
barfoo = barfoo + 'H'
barfoo = barfoo + 'I'

answered Jun 12, 2018 at 22:45

PixelEinstein

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