python中按变量定义的调用

我有两个文件

test_def.py
def hi_test(a):
    return a

test_run.py

from test_def import hi_test
a = 'hi'
b = 'test'
c = 'lion'

run = "{0}_{1}".format(a, b)
run1 = run(c)
print run1

from test_def import hi_test

a = 'hi'
b = 'test'
c = 'lion'

run = "{0}_{1}".format(a, b)
exec("%s('%s')"%(run, c))

它正在打印hi_testlion，而不是执行/调用def函数。 有人可以帮助执行def功能吗

test_def.py

import test_def
a = 'hi'
b = 'test'
c = 'lion'

run = "{0}_{1}".format(a, b)
run1 = getattr(test_def, run)(c)
print run1

def hi_test(a):
    print a

test_run.py

from test_def import hi_test
a = 'hi'
b = 'test'
c = 'lion'

run = "{0}_{1}".format(a, b)
run1 = run(c)
print run1

from test_def import hi_test

a = 'hi'
b = 'test'
c = 'lion'

run = "{0}_{1}".format(a, b)
exec("%s('%s')"%(run, c))

---

虽然第一个答案更好

但可以通过以下方法存档

import test_def
a = 'hi'
b = 'test'
c = 'lion'

run = "{0}_{1}".format(a, b)
run1 = getattr(test_def,run)
run2 = run1(c)
print run2

我想这是复制品