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How Can I Dynamically Create Python Variables Using String Variables?

Susan Sarandon
Susan SarandonOriginal
2024-11-27 17:49:10580browse

How Can I Dynamically Create Python Variables Using String Variables?

Assigning Variable Names Based on String Variables

It is possible to define a new variable using the value assigned to a string variable. This can be useful in situations where the variable names need to be dynamic or generated based on certain conditions.

Using exec() Function

The exec() function can be used to dynamically execute Python code. This allows us to create new variables using the value stored in a string variable.

For example, let's say we have a string variable foo assigned to the value "bar." We want to define a new variable based on this string, but instead of changing foo itself, we want to create a new variable named bar.

foo = "bar"
exec(foo + " = 'something else'")

By executing this code, we create a new variable named bar with the value "something else." The exec() function interprets the string foo " = 'something else'" as Python code and executes it.

Output:

print(bar)
something else

The exec() function provides a powerful way to dynamically create and manipulate variables based on string values. However, it is important to use it carefully as it can lead to security vulnerabilities if the string values are not properly validated or controlled.

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