Given a string containing Python code, the task is to execute it dynamically.For example:
Input: "x = 5\ny = 10\nprint(x + y)"Output: 15
Below are multiple methods to execute a string of Python code efficiently.
exec() function allows us to execute dynamically generated Python code stored in a string.
code="x = 5\ny = 10\nprint(x + y)"exec(code)
15
Explanation:
eval()function can execute a single expression stored in a string and return its result. It is more limited compared to exec() but can be useful for evaluating expressions.
code="5 + 10"res=eval(code)print(res)
compile() converts a string into a code object, which can then be executed multiple times using exec() or eval(). Useful when the same code is run repeatedly.
code="x = 5\ny = 10\nprint(x + y)"res=compile(code,'<string>','exec')exec(res)
If we want to execute the code in a separate process, we can use thesubprocess module. This is more suitable for executing standalone scripts or commands.
importsubprocesscode="print(5 + 10)"subprocess.run(["python3","-c",code])
C
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