python - ImportError: cannot import name Error -

i have simple test function need capture execution time using 'timeit' module, error

the function:

import timeit def test1():                                 l = []     in range(1000):         l = l + [i]  t1 = timeit.timer("test1()", "from __main__ import test1") print(t1.timeit(number=1000)) 

the error: c:\python34\lib\timeit.py:186: in timeit timing = self.inner(it, self.timer) :3: in inner ??? e
importerror: cannot import name 'test1' =========== 1 error in 0.03 seconds ==============

can guys me solution?

i think there couple of problems code. first make sure can import timeit. , have module. this, can run:

 python -m timeit '"-".join(str(n) n in range(100))' 

if execute fine sure have timeit module.

now regarding question. took liberty rewriting in cleaner way.

import timeit      def append_list():  num_list = []  in range(1000):          num_list.append(i)  print(timeit.timeit(stmt=append_list, number=1000)) #number number of repetion of operation, in case, 1000 # can run print(timeit.timeit(stmt=append_list, number=1))    

now, above wanted do, i.e calculate amount of time required append numbers 1 1000 list.