using Python eval() Method to execute a string format function and return value [duplicate]

Question

x = """
def test_add(a, b):
    add = a + b
    return add

test_add(10, 6)
"""
print(eval(x))

The above code produces following error:

File "<string>", line 2
    def test_add(a, b):
      ^
SyntaxError: invalid syntax

How can i fix this error ? Note : In this example, 16 should be printed to the console.

Eval expects an expression an returns its value. You need exec and put the print statement inside the string because exec return None. — kubatucka
– kubatucka, Commented Mar 21, 2021 at 13:16

Donghe-Han · Accepted Answer · 2021-03-21 13:32:51Z

-2

The eval() method can returns the result evaluated from the expression.

a = 10
b = 6
print(eval("a+b"))

answered Mar 21, 2021 at 13:32

Donghe-Han

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1 Comment

Ok, and? How does that answer the question? You didn't explain why the code in the question doesn't work or how to fix it...