Adding prefix to existing array

Question

I am trying to add suffix to an existing array. Below is my code

print('a' + [10, 100])

With this I am getting below error

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: can only concatenate str (not "list") to str

Could you please help hoe to do that? I could use some for loop but I believe there may be more straightforward way to achieve the same.

The error message is clear. So you want a string as this - a10? — Daniel Hao
– Daniel Hao, Commented Jan 16, 2022 at 15:26

Arup Rakshit · Accepted Answer · 2022-01-16 15:31:51Z

2

You can create a new concatenated array as:

>>> ['{0}{1}'.format('a', num) for num in [10, 100]]
['a10', 'a100']

answered Jan 16, 2022 at 15:31

Arup Rakshit

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Comments

Daniel Hao · Accepted Answer · 2022-01-16 15:32:17Z

0

If I understand your question, you want a new string array (list). You could try this:

new_lst = ['a'+str(x) for x in [10, 100]] # just use string concatentation

answered Jan 16, 2022 at 15:32

Daniel Hao

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