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Get the week start date and week end date from week number
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18 Answers
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How many double numbers are there between 0.0 and 1.0?
...or example, that's the number of distinct doubles between 0.5 included and 1.0 excluded, and exactly that many also lie between 1.0 included and 2.0 excluded, and so forth.
Counting the doubles between 0.0 and 1.0 is harder than doing so between powers of two, because there are many powers of two i...
How to define a two-dimensional array?
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1039
You're technically trying to index an uninitialized array. You have to first initialize the o...
Concatenating two one-dimensional NumPy arrays
... as separate arguments.
From the NumPy documentation:
numpy.concatenate((a1, a2, ...), axis=0)
Join a sequence of arrays together.
It was trying to interpret your b as the axis parameter, which is why it complained it couldn't convert it into a scalar.
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Frequency table for a single variable
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153
Maybe .value_counts()?
>>> import pandas
>>> my_series = pandas.Series([1,2...
What is the most efficient way to create a dictionary of two pandas Dataframe columns?
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196
In [9]: pd.Series(df.Letter.values,index=df.Position).to_dict()
Out[9]: {1: 'a', 2: 'b', 3: 'c...
How do I concatenate or merge arrays in Swift?
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12 Answers
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Grouping functions (tapply, by, aggregate) and the *apply family
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10 Answers
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How to create a density plot in matplotlib?
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Sven has shown how to use the class gaussian_kde from Scipy, but you will notice that it doesn...
Why does Lua have no “continue” statement?
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11 Answers
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