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How to assert two list contain the same elements in Python? [duplicate]
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In Python >= 3.0
assertCountEqual(l1, l2) # True
In Python >= 2.7, the above function was named:
assertItemsEqual(l1, l2) # True
In Python < 2.7
import unittest2
assertItemsEqual(l1, l2) # True
Via six module (Any Python version)
import unittest
import six
class MyTest(unittes...
Zip lists in Python
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In Python 2.7 this might have worked fine:
>>> a = b = c = range(20)
>>> zip(a, b, c)
But in Python 3.4 it should be (otherwise, the result will be something like <zip object at 0x00000256124E7DC8>):
>>...
How to avoid “RuntimeError: dictionary changed size during iteration” error?
... {k: v for k,v in d.iteritems() if v} # re-bind to non-empty
If prior to 2.7:
d = dict( (k, v) for k,v in d.iteritems() if v )
or just:
empty_key_vals = list(k for k in k,v in d.iteritems() if v)
for k in empty_key_vals:
del[k]
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为什么你有10年经验，但成不了专家？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
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哦，对了，我表达逻辑有问题，让客户半天都不知道我在讲什么。
还有，我记得上次沟通后我曾遗漏了细节，忘记跟客户讨论。
怎么办呢？逻辑问题的话，我首先练习『结论先行』这个原则吧(记得上次李叫兽来培训...
云数据及Firebase组件简介 · App Inventor 2 中文网
...才能制作大量使用的应用程序并分发给大量用户。
当前版本的 FirebaseDB 组件是实验性的，其属性可能会根据用户评论而更改。 特别是，此实验版本不包括将其与您自己的 Firebase 帐户一起使用的功能，而只能与 MIT 的默认帐户一...
Cosine Similarity between 2 Number Lists
... root.
ETA: Updated print call to be a function. (The original was Python 2.7, not 3.3. The current runs under Python 2.7 with a from __future__ import print_function statement.) The output is the same, either way.
CPYthon 2.7.3 on 3.0GHz Core 2 Duo:
>>> timeit.timeit("cosine_similarity...
Getting the index of the returned max or min item using max()/min() on a list
...benchmark points out:
I have run the benchmark on my machine with python 2.7 for the two solutions above (blue: pure python, first solution) (red, numpy solution) and for the standard solution based on itemgetter() (black, reference solution).
The same benchmark with python 3.5 showed that the met...
MFC CString::Format()函数详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
MFC CString::Format()函数详解我在编写程序时经常会使用CString::Format()来格式化字符串！但往往只是使用了Format很少一部分功能，比如整型转换成字符串！不过今天我想...我在编写程序时经常会使用CString::Format()来格式化字符串！但...
Convert python datetime to epoch with strftime
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@Michael That function is new in Python 2.7, you must be using an older version. For versions before 2.7 you can do td.seconds + td.days*24*3600. This discards the microseconds part.
– jleahy
Apr 21 '14 at 12:31
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UnicodeDecodeError: 'charmap' codec can't decode byte X in position Y: character maps to
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Cool, I had that problem with some Python 2.7 code that I tried to run in Python 3.4. Latin-1 worked for me!
– 1vand1ng0
Apr 14 '15 at 8:56
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