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Xavier Thompson
cython
Commits
f39afe8d
Commit
f39afe8d
authored
Dec 17, 2010
by
Stefan Behnel
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extended test case for nonlocal
parent
d8813f05
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tests/run/nonlocal_T490.pyx
tests/run/nonlocal_T490.pyx
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tests/run/nonlocal_T490.pyx
View file @
f39afe8d
...
@@ -64,3 +64,108 @@ def argtype(int n):
...
@@ -64,3 +64,108 @@ def argtype(int n):
print
n
print
n
return
return
def
ping_pong
():
"""
>>> f = ping_pong()
>>> inc, dec = f(0)
>>> inc()
1
>>> inc()
2
>>> dec()
1
>>> inc()
2
>>> dec()
1
>>> dec()
0
"""
def
f
(
x
):
def
inc
():
nonlocal
x
x
+=
1
return
x
def
dec
():
nonlocal
x
x
-=
1
return
x
return
inc
,
dec
return
f
def
methods
():
"""
>>> f = methods()
>>> c = f(0)
>>> c.inc()
1
>>> c.inc()
2
>>> c.dec()
1
>>> c.dec()
0
"""
def
f
(
x
):
class
c
:
def
inc
(
self
):
nonlocal
x
x
+=
1
return
x
def
dec
(
self
):
nonlocal
x
x
-=
1
return
x
return
c
()
return
f
# FIXME: doesn't currently work in class namespace:
## def class_body():
## """
## >>> c = f(0)
## >>> c.get()
## 1
## >>> c.x #doctest: +ELLIPSIS
## Traceback (most recent call last):
## AttributeError: ...
## """
## def f(x):
## class c:
## nonlocal x
## x += 1
## def get(self):
## return x
## return c()
def
generator
():
"""
>>> g = generator()
>>> list(g(5))
[2, 3, 4, 5, 6]
"""
def
f
(
x
):
def
g
(
y
):
nonlocal
x
for
i
in
range
(
y
):
x
+=
1
yield
x
return
g
return
f
(
1
)
def
nested_nonlocals
(
x
):
"""
>>> g = nested_nonlocals(1)
>>> h = g()
>>> h()
3
"""
def
g
():
nonlocal
x
x
-=
2
def
h
():
nonlocal
x
x
+=
4
return
x
return
h
return
g
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