How Can I Access a Variable's Value in Python Using its Name as a String?

Accessing Variable Values from String Names

In programming, accessing the value of a variable given its name stored within a string can present a challenge. This question delves into a solution for retrieving such values.

The provided PHP code snippet highlights a technique where a variable's value is retrieved using the "$$" syntax. However, in Python, a similar functionality is not readily available.

Solution for Python

If the target variable is defined globally, a variant of the PHP approach can be employed:

>>> a = 5
>>> globals()['a']
5

For non-global variables, access to the relevant namespace is crucial. Without that context, retrieving the variable's value from a string becomes impossible.

Caution Regarding "eval"

It's important to note that while "eval" offers a way to execute code dynamically from a string, it should be used with utmost caution. Code sourced from untrusted sources should not be evaluated using "eval," as it can lead to malicious actions, including data deletion.

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