mirror of
https://github.com/pocketpy/pocketpy
synced 2025-10-19 19:10:17 +00:00
130 lines
1.8 KiB
Python
130 lines
1.8 KiB
Python
def g():
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yield 1
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yield 2
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yield
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a = g()
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assert next(a) == 1
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assert next(a, None) == 2
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assert next(a) == None
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try:
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next(a)
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exit(1)
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except StopIteration:
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pass
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assert next(a, 3) == 3
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assert next(a, 4) == 4
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def f(n):
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for i in range(n):
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yield i
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x = 0
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for j in f(5):
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x += j
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assert x == 10
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a = [i for i in f(6)]
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assert a == [0,1,2,3,4,5]
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def f(n):
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for i in range(n):
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for j in range(n):
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yield i, j
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a = [i for i in f(3)]
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assert len(a) == 9
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assert a[0] == (0,0)
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assert a[1] == (0,1)
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assert a[2] == (0,2)
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assert a[3] == (1,0)
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assert a[4] == (1,1)
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assert a[5] == (1,2)
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assert a[6] == (2,0)
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assert a[7] == (2,1)
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assert a[8] == (2,2)
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def g():
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yield from [1, 2, 3]
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def f():
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yield from g()
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a = [i for i in f()]
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assert a == [1, 2, 3]
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def f():
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for i in range(5):
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yield str(i)
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assert '|'.join(f()) == '0|1|2|3|4'
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def f(n):
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for i in range(n):
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yield i
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for j in range(i):
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yield j
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t = f(3)
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assert list(t) == [0, 1, 0, 2, 0, 1]
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def f(n):
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for i in range(n):
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if i == n-1:
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raise ValueError
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yield i
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t = f(3)
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t = iter(t)
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assert next(t) == 0
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assert next(t) == 1
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try:
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next(t)
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exit(1)
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except ValueError:
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pass
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try:
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next(t)
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exit(1)
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except StopIteration:
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pass
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def f():
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yield 1
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yield 2
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return
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yield 3
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assert list(f()) == [1, 2]
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def g():
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yield 1
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yield 2
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return 3
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yield 4
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assert StopIteration().value == None
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assert StopIteration(3).value == 3
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try:
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iter = g()
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assert next(iter) == 1
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assert next(iter) == 2
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next(iter) # raises StopIteration
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print('UNREACHABLE!!')
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exit(1)
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except StopIteration as e:
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assert e.value == 3
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def f():
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a = yield from g()
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yield a
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assert list(f()) == [1, 2, 3] |