1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
# mode: run
# tag: forin
import sys
import cython
try:
from builtins import next
except ImportError:
def next(it):
return it.next()
def for_in_pyiter_pass(it):
"""
>>> it = Iterable(5)
>>> for_in_pyiter_pass(it)
>>> next(it)
Traceback (most recent call last):
StopIteration
"""
for item in it:
pass
def for_in_pyiter(it):
"""
>>> for_in_pyiter(Iterable(5))
[0, 1, 2, 3, 4]
"""
l = []
for item in it:
l.append(item)
return l
def for_in_list():
"""
>>> for_in_pyiter([1,2,3,4,5])
[1, 2, 3, 4, 5]
"""
@cython.test_assert_path_exists('//TupleNode//IntNode')
@cython.test_fail_if_path_exists('//ListNode//IntNode')
def for_in_literal_list():
"""
>>> for_in_literal_list()
[1, 2, 3, 4]
"""
l = []
for i in [1,2,3,4]:
l.append(i)
return l
@cython.test_assert_path_exists('//TupleNode//IntNode')
@cython.test_fail_if_path_exists('//ListNode//IntNode')
def for_in_literal_mult_list():
"""
>>> for_in_literal_mult_list()
[1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4]
"""
l = []
for i in [1,2,3,4] * 3:
l.append(i)
return l
class Iterable(object):
"""
>>> for_in_pyiter(Iterable(5))
[0, 1, 2, 3, 4]
"""
def __init__(self, N):
self.N = N
self.i = 0
def __iter__(self):
return self
def __next__(self):
if self.i < self.N:
i = self.i
self.i += 1
return i
raise StopIteration
next = __next__
if sys.version_info[0] >= 3:
class NextReplacingIterable(object):
def __init__(self):
self.i = 0
def __iter__(self):
return self
def __next__(self):
if self.i > 5:
raise StopIteration
self.i += 1
self.__next__ = self.next2
return 1
def next2(self):
self.__next__ = self.next3
return 2
def next3(self):
del self.__next__
raise StopIteration
else:
class NextReplacingIterable(object):
def __init__(self):
self.i = 0
def __iter__(self):
return self
def next(self):
if self.i > 5:
raise StopIteration
self.i += 1
self.next = self.next2
return 1
def next2(self):
self.next = self.next3
return 2
def next3(self):
del self.next
raise StopIteration
def for_in_next_replacing_iter():
"""
>>> for_in_pyiter(NextReplacingIterable())
[1, 1, 1, 1, 1, 1]
"""
def for_in_gen(N):
"""
>>> for_in_pyiter(for_in_gen(10))
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
"""
for i in range(N):
yield i
|
