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Flatten nested dictionaries, compressing keys
...;> flatten({'a': 1, 'c': {'a': 2, 'b': {'x': 5, 'y' : 10}}, 'd': [1, 2, 3]})
{'a': 1, 'c_a': 2, 'c_b_x': 5, 'd': [1, 2, 3], 'c_b_y': 10}
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add a string prefix to each value in a string column using Pandas
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236
df['col'] = 'str' + df['col'].astype(str)
Example:
>>> df = pd.DataFrame({'col':['a...
Rename Pandas DataFrame Index
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243
The rename method takes a dictionary for the index which applies to index values.
You want to re...
Is it correct to use JavaScript Array.sort() method for shuffling?
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edited Aug 27 at 23:04
AmerllicA
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promise already under evaluation: recursive default argument reference or earlier problems?
...instances where they occur we get:
f <- function(x, T) {
10 * sin(0.3 * x) * sin(1.3 * x^2) + 0.001 * x^3 + 0.2 * x + 80
}
g <- function(x, T, f. = f) { ## 1. note f.
exp(-f.(x)/T)
}
test<- function(g. = g, T = 1) { ## 2. note g.
g.(1,T)
}
test()
## [1] 8.560335e-37
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Get the Row(s) which have the max count in groups using groupby
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341
In [1]: df
Out[1]:
Sp Mt Value count
0 MM1 S1 a 3
1 MM1 S1 n 2
2 ...
WPF ToolBar: how to remove grip and overflow
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153
The grip can be removed by setting the attached property ToolBarTray.IsLocked="True" on the Tool...
Matplotlib: “Unknown projection '3d'” error
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First off, I think mplot3D worked a bit differently in matplotlib version 0.99 than it does in the current version of matplotlib.
Which version are you using? (Try running: python -c 'import matplotlib; print matplotlib."__version__")
I'm guessing...
Difference between MEAN.js and MEAN.io
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374
They're essentially the same... They both use swig for templating, they both use karma and moc...