E.f.suvorov: Новая страница: «

    1: >>> a=[]    2: >>> for i in range(10): ...     a.append(i) ...    3: >>> a [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]    4: >>> a=[]    5: >>> %rep 2    6: >>> a=…»

2016-09-28T11:16:51Z

Новая страница: «<pre> 1: >>> a=[] 2: >>> for i in range(10): ... a.append(i) ... 3: >>> a [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] 4: >>> a=[] 5: >>> %rep 2 6: >>> a=…»

Новая страница

<pre>
1: >>> a=[]
2:
>>> for i in range(10):
... a.append(i)
...
3: >>> a
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
4: >>> a=[]
5: >>> %rep 2
6: >>> a=[]
7: >>> for i in range(10): a.append(i * i)
8: >>> a
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
9: >>> for i in range(10): a.append(i * i)
10: >>> a
[0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
11: >>> a=[0,0,0,2,2,4,4,5,6,6]
12: >>> ans=[(0,3), (2,2), (4,2), (5,1), (6,2)]
13: >>> out=[]
14: >>> %edit
'def lre_encode(a):\n if not a:\n out=[]\n else:\n out=[[a[0], 1]]\n for elem in a[1:]:\n if out[-1][0] == elem:\n out[-1][1] += 1\n else:\n out.append([elem, 1])\n return out\n'
15: >>> lre_encode(a)
[[0, 3], [2, 2], [4, 2], [5, 1], [6, 2]]
16: >>> lre_encode([])
[]
17: >>> lre_encode([100])
[[100, 1]]
18: >>> lre_encode([100,100])
[[100, 2]]
19: >>> lre_encode([10] * 100)
[[10, 100]]
20: >>> lre_encode([0])
[[0, 1]]
21: >>> a
[0, 0, 0, 2, 2, 4, 4, 5, 6, 6]
22: >>> a[1:-1]
[0, 0, 2, 2, 4, 4, 5, 6]
23: >>> as=[]
24: >>> xs=[]
25: >>> ys=[]
26: >>> zs=[]
27: >>> map(str, [1, 2, 3])
<map at 0x3413d70>
28: >>> list(map(str, [1, 2, 3]))
['1', '2', '3']
29: >>> a=[1, 2, 3]
30: >>> b=[]
31:
>>> for elem in a:
... b.append(str(elem))
...
32: >>> b
['1', '2', '3']
33: >>> map(str, a)
<map at 0x342c4b0>
34: >>> list(map(str, a))
['1', '2', '3']
35: >>> a
[1, 2, 3]
36: >>> a=[1,1,2,2,2,3,5,5]
37: >>> out=[]
38: >>> last_value=None
39: >>> last_length=0
40:
>>> for elem in a:
... if elem == last_value:
... last_length += 1
... else:
... out.append((last_value, last_length))
... last_value = elem
... last_length = 1
...
41: >>> out
[(None, 0), (1, 2), (2, 3), (3, 1)]
42: >>> out.append((last_value, last_length))
43: >>> out
[(None, 0), (1, 2), (2, 3), (3, 1), (5, 2)]
44: >>> if name[0] == "." or name[0] == "~": continue
45: >>> name.startswith(".")
46: >>> a, a, b, a = range(4)
47: >>> a
3
48: >>> b
2
49: >>> %paste
50: >>> x=A()
51: >>> x=A(100)
52: >>> print(x)
53: >>> x.inc_foo()
54: >>> print(x)
55: >>> y=B()
56: >>> y=B(1000)
57: >>> print(y)
58: >>> y.inc_foo()
59: >>> print(y)
60:
>>> class B(A):
... def __init__(self):
... print("B constructed")
...
61: >>> y=B()
62: >>> print(y)
63:
>>> class B(A):
... def __init__(self):
... super(B, self).__init__(123)
...
64: >>> y=B()
65: >>> print(y)
66: >>> %paste
67: >>> x=A()
68: >>> x.foo()
69: >>> x.foo()
70: >>> y=A()
71: >>> y.foo()
72: >>> y.foo()
73: >>> del x.foo
74: >>> x.foo()
75: >>> del A.foo
76: >>> x.foo()
77: >>> del x.foo
78: >>> x.foo()
79: >>> A.foo = lambda self: print("self=", self)
80: >>> x.foo()
81: >>> A.__name__
'A'
82: >>> type(x).__name__
'A'
83: >>> x.__dict__
{}
84: >>> x.botva = 0
85: >>> x.__dict__
{'botva': 0}
86: >>> vars(x)
{'botva': 0}
87: >>> vars(A)
mappingproxy({'__weakref__': <attribute '__weakref__' of 'A' objects>, '__dict__': <attribute '__dict__' of 'A' objects>, '__doc__': None, '__module__': '__main__', 'foo': <function <lambda> at 0x034D54F8>})
88: >>> A.__dict__
mappingproxy({'__weakref__': <attribute '__weakref__' of 'A' objects>, '__dict__': <attribute '__dict__' of 'A' objects>, '__doc__': None, '__module__': '__main__', 'foo': <function <lambda> at 0x034D54F8>})
89: >>> isinstance(x, A)
True
90:
>>> class B:
... pass
...
91: >>> isinstance(x, B)
False
92:
>>> class C(A):
... pass
...
93: >>> x=C()
94: >>> isinstance(x, C)
True
95: >>> isinstance(x, A)
True
96: >>> isinstance(x, B)
False
97: >>> x=A()
98: >>> isinstance(x, A)
True
99: >>> isinstance(x, B)
False
100: >>> isinstance(x, C)
False
101: >>> issubclass(A, B)
False
102: >>> issubclass(B, A)
False
103: >>> issubclass(C, A)
True
104: >>> issubclass(A, C)
False
</pre>

Лог занятия по парадигмам, 28.09.2016 - История изменений

E.f.suvorov: Новая страница: «
1: >>> a=[] 2: >>> for i in range(10): ... a.append(i) ... 3: >>> a [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] 4: >>> a=[] 5: >>> %rep 2 6: >>> a=…»