在python中运行包含python代码的字符串。

Question

I have a string containing some if/else statements, for example:

self.y = 10

x = "if 1 > self.y: DO-Something else: Do-something-else"

is it possible to run this code while the program is opperating. (pseudocode explination)

x = "if 1 > self.y: DO-Something else: Do-something-else"

runprogram(x)

Thanks!

Answer 1

As mentioned in the comments, you can use exec (eval would do too, in some situations).

But you need to be very careful, especially if the code to be evaluated (or executed) will be input by the users.

Answer 2

use exec to execute your code in string.

But use exec with care :)