How to change an int value by strings combination

Question

I need to change an int value by strings combination

x = 'person'
y = '400'

person400 = 1000

eval(x + y) = 3000 #i want to change person400 value by strings combination 


print(person400) # print 3000

You get help here: [How do I create variable variables?](https://stackoverflow.com/questions/1373164/how-do-i-create-variable-variables) — mkrieger1, Jun 20 '21 at 22:46
Why would you want to do that? This seems like an XY problem to me. What is your goal. — Yoshikage Kira, Jun 20 '21 at 22:51

rosaqq · Accepted Answer · 2021-06-20T22:52:15.237

-1

eval only evaluates the value of an expression. So if you want to execute a line of code you need to use exec.

Also the whole assignment needs to be inside exec, so that everything gets run as one line of code.
exec(x + y + '= 3000').
Which in your example will run as exec('person400 = 3000').

However this is a really bad way of setting variables so make sure you think it makes sense.

edited Jun 20 '21 at 22:52

answered Jun 20 '21 at 22:49

rosaqq

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Did you test it? – blhsing Jun 20 '21 at 22:51
@blhsing My mistake. Corrected the ans – rosaqq Jun 20 '21 at 22:56

How to change an int value by strings combination

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