python - Why does this input to int does not work properly? -

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i'm trying solve in python , not sure why isn't working...

x = int(input("enter value of x: ")) y = int(input("enter value of y: ")) print(y) input("...")

the problem y. input follows without quotes: "2 * x" have tried lot of things , researched lot (as before asking) stumped here. perhaps it's because i'm such basic user.

seems reading books python2, have installed python3. in python2, input equals eval(raw_input(prompt)), that's why when input 2 * x, evaluates value of expression , assign y.

in python3, input user input strings, not eval expression, may need explicitly eval, a bad practice , dangerous:

in [7]: x=2  in [8]: y=eval(input('input y:'))  input y:3*x   in [9]: y out[9]: 6

all in all, use: raw_input in py2, input in py3, never use eval (or input in py2) in production code.


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