Is it possible to call a variable by concatenating two strings in Python?

Asked Jun 03 '20 at 23:02

Active Jun 03 '20 at 23:04

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Is it possible to concatenate two strings and call the resulting string as a variable?

For example, suppose I have a variable foo = "bar" and for some very weird reason I wanted to call it with the strings "fo" and "o" such as this incomplete example:

foo = "bar"
weapon = "fo" + "o"
print(weapon)

In this case, Python will obviously output "foo". How do I instead get this to output "bar" by using the variable weapon?

I have already solved the problem a by creating a dictionary and using the resulting string as the key, but I am still curious if it is possible to call a variable using a concatenated string.

Thanks for any guidance!

edited Jun 03 '20 at 23:04

juanpa.arrivillaga

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asked Jun 03 '20 at 23:02

patmcb

Use `eval`. But you shouldn't do that. Note also, a terminology point, `foo` isn't *calling* a variable. To *call* something means to call it like a function, so `foo()` would be calling – juanpa.arrivillaga Jun 03 '20 at 23:03
It's possible but generally not a good idea. – Barmar Jun 03 '20 at 23:03
`globals()[weapon]` is `globals()["foo"]` which is the value of the name "foo". – Andrew Jaffe Jun 03 '20 at 23:08
@AndrewJaffe of course, that won't work outside of the global scope – juanpa.arrivillaga Jun 03 '20 at 23:22

Is it possible to call a variable by concatenating two strings in Python?

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