How to use a variable as a function name in Python?

PHP has the usage of variable functions (see http://www.php.net/manual/en/functions.variable-functions.php)

That is, there is a string variable

Now I want to use the value of this variable as The code to call a certain function name is as follows:

def bar():
    return 'bar'
foo = 'bar'
foo() #此处想调用 bar()

I wonder if Python has such usage?

Haha, python is so powerful, of course python can also support it

Python has an eval function (it seems that many languages ​​have this function) that can solve this problem.

The code is as follows:

def foo():
  print 'hi'
t = eval('foo')
t()

Question 2: Can python import a module that is the value of a certain variable?

foo = 'bar'
import foo #此处想导入 bar

Another function is used here. . .

Code:

m = 'sys'
exec "import " +　m

That’s it ok