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Delete element in a slice
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flornquake
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answered Jul 29 '14 at 21:47
davedave
46.2...
Global access to Rake DSL methods is deprecated
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5 Answers
5
Active
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How to convert a boolean array to an int array
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edited Sep 9 '16 at 15:43
the Tin Man
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RuntimeWarning: invalid value encountered in divide
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157
I think your code is trying to "divide by zero" or "divide by NaN". If you are aware of that an...
Static variables in member functions
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answered Jun 3 '11 at 5:37
iammilindiammilind
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Python unittests in Jenkins?
...all last):
File "/opt/python-2.6.1/lib/python2.6/site-packages/unittest2-0.5.1-py2.6.egg/unittest2/case.py", line 340, in run
testMethod()
File "/home/damien/tests.py", line 16, in test_fail
self.assertEqual(11, 7 + 3)
File "/opt/python-2.6.1/lib/python2.6/site-packages/unittest2-0.5.1-py2.6.egg/uni...
How to show SQL queries run in the Rails console?
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254
Rails 3+
Enter this line in the console:
ActiveRecord::Base.logger = Logger.new(STDOUT)
Rai...
Selecting with complex criteria from pandas.DataFrame
... range(10)]})
>>> df
A B C
0 9 40 300
1 9 70 700
2 5 70 900
3 8 80 900
4 7 50 200
5 9 30 900
6 2 80 700
7 2 80 400
8 5 80 300
9 7 70 800
We can apply column operations and get boolean Series objects:
>>> df["B"] > 50
0 False
1 True...
How to check if a value exists in a dictionary (python)
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>>> d = {'1': 'one', '3': 'three', '2': 'two', '5': 'five', '4': 'four'}
>>> 'one' in d.values()
True
Out of curiosity, some comparative timing:
>>> T(lambda : 'one' in d.itervalues()).repeat()
[0.28107285499572754, 0.29107213020324707, 0.2794110774993...
How to overcome TypeError: unhashable type: 'list'
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56
As indicated by the other answers, the error is to due to k = list[0:j], where your key is conv...