mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-31 14:07:50 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 9

Issue 7410: deepcopy of itertools.count() reset the count.

Browse source
This commit is contained in:
Raymond Hettinger 2009-11-30 22:02:31 +00:00
parent 8e319fc511
commit a3e1ad27a8
2 changed files with 26 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

9
Lib/test/test_itertools.py
View file

@ -7,6 +7,8 @@ from fractions import Fraction
import sys
import operator
import random
import copy
import pickle
from functools import reduce
maxsize = support.MAX_Py_ssize_t
minsize = -maxsize-1
@ -352,6 +354,13 @@ class TestBasicOps(unittest.TestCase):
r2 = 'count(%r)'.__mod__(i).replace('L', '')
self.assertEqual(r1, r2)
# check copy, deepcopy, pickle
for value in -3, 3, maxsize-5, maxsize+5:
c = count(value)
self.assertEqual(next(copy.copy(c)), value)
self.assertEqual(next(copy.deepcopy(c)), value)
self.assertEqual(next(pickle.loads(pickle.dumps(c))), value)
def test_count_with_stride(self):
self.assertEqual(lzip('abc',count(2,3)), [('a', 2), ('b', 5), ('c', 8)])
self.assertEqual(lzip('abc',count(start=2,step=3)),