iterators

This commit is contained in:
tengge1 2019-09-02 20:10:47 +08:00
parent e3e459d44f
commit f61eda145a
2 changed files with 64 additions and 0 deletions

20
test/python/class_test.py Normal file
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class MyClass:
'''A simple example class'''
i = 12345
def __init__(self):
self.i = 123
def f(self):
print(self.i)
class DerivedClass(MyClass):
pass
x = DerivedClass()
x.f()
x.name = 'Test'
print(x.name)

44
test/python/iterators.py Normal file
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for i in [1, 2, 3]:
print(i)
for i in (4, 5, 6):
print(i)
for i in {'a': 1, 'b': '2'}:
print(i)
a = iter('111')
print(next(a))
print(next(a))
print(next(a))
class Reverse:
def __init__(self, data):
self.data = data
self.index = len(data)
def __iter__(self):
return self
def __next__(self):
if self.index == 0:
raise StopIteration
self.index = self.index - 1
return self.data[self.index]
rev = Reverse('spam')
print(iter(rev))
for char in rev:
print(char)
def reverse(data):
for index in range(len(data) - 1, -1, -1):
yield data[index]
for char in reverse('golf'):
print(char)