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.NET String.Format() to add commas in thousands place for a number
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21 Answers
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Is R's apply family more than syntactic sugar?
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154
The apply functions in R don't provide improved performance over other looping functions (e.g....
pandas: How do I split text in a column into multiple rows?
...blocks ItemExt
0 32363 McCartney, Paul 3 F04 2:218:10:4,6 60
1 31316 Lennon, John 25 F01 1:13:36:1,12 1:13:37:1,13 300
In [44]: s = df['Seatblocks'].str.split(' ').apply(Series, 1).stack()
In [45]: s.index = s.index.droplevel(-1) # to line up wi...
Can I change the checkbox size using CSS?
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Pandas groupby: How to get a union of strings
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179
In [4]: df = read_csv(StringIO(data),sep='\s+')
In [5]: df
Out[5]:
A B C
0 ...
Numpy first occurrence of value greater than existing value
I have a 1D array in numpy and I want to find the position of the index where a value exceeds the value in numpy array.
7 A...
Regular expression to match URLs in Java
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106
Try the following regex string instead. Your test was probably done in a case-sensitive manner...
Converting strings to floats in a DataFrame
...or pd.to_numeric as described in other
answers.
This is available in 0.11. Forces conversion (or set's to nan)
This will work even when astype will fail; its also series by series
so it won't convert say a complete string column
In [10]: df = DataFrame(dict(A = Series(['1.0','1']), B = Series([...