1. Python
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2. yield
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3. def f1(t):
newt = []
for i in t:
newt.append(i+1)
return newt
def f2(t):
for i in t:
yield i+1
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4. [i+1 for i in arr]
(i+1 for i in arr)
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5. __call__
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6. class M(object):
def __init__(self,f):
self.f = f
def __call__(self,v):
return v*self.f
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7. >>>t2 = M(2)
>>>t2(5)
10
>>>t3 = M(3)
>>>t3(10)
30
>>>callable(t2)
True
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8. 2009 11 4

9. __len__
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10. class A(object):
def __len__(self):
return 10
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11. >>>a = A()
>>>len(a)
10
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12. from multiprocessing import Process,Pool,cpu_count
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13. Meta Class
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14. New Style vs Old Style
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15. DClass = type(‘DClass’,(object,),{‘spam’:‘eggs’})
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