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Python Pandas: Get index of rows which column matches certain value
... pd.DataFrame({'BoolCol': [True, False, False, True, True]},
index=[10,20,30,40,50])
In [53]: df
Out[53]:
BoolCol
10 True
20 False
30 False
40 True
50 True
[5 rows x 1 columns]
In [54]: df.index[df['BoolCol']].tolist()
Out[54]: [10, 40, 50]
If you want to use the index...
Sqlite LIMIT / OFFSET query
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edited Apr 11 '15 at 16:36
andybalholm
11.6k22 gold badges2828 silver badges4040 bronze badges
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How to create a fixed-size array of objects
...I want first to initialize it empty, then I would put Sprites in the first 16 cells, and the last 16 cells (simulating an chess game).
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Getting a list of all subdirectories in the current directory
...e it just to give you the immediate child directories:
next(os.walk('.'))[1]
Or see the other solutions already posted, using os.listdir and os.path.isdir, including those at "How to get all of the immediate subdirectories in Python".
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or (HTML5)
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162
nav is used for groups of internal links (a elements). Generally this means the links should t...
Error renaming a column in MySQL
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edited Nov 3 '16 at 21:53
c0degeas
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answered Oct 23 '10...
Size of Matrix OpenCV
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241
cv:Mat mat;
int rows = mat.rows;
int cols = mat.cols;
cv::Size s = mat.size();
rows = s.height;...
Using Phonegap for Native Application development [closed]
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edited Sep 13 '12 at 18:51
Gil Birman
31.6k1111 gold badges6161 silver badges102102 bronze badges
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How do you use variables in a simple PostgreSQL script?
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10 Answers
10
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How to compare DateTime in C#?
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182
MSDN: DateTime.Compare
DateTime date1 = new DateTime(2009, 8, 1, 0, 0, 0);
DateTime date2 = n...