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Pandas dataframe get first row of each group

...the function default method keep='first'. df.drop_duplicates('id') Out[1027]: id value 0 1 first 3 2 first 5 3 first 9 4 second 11 5 first 12 6 first 15 7 fourth share | ...
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Android SQLite: nullColumnHack parameter in insert/replace methods

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How Python web frameworks, WSGI and CGI fit together

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Pandas: Looking up the list of sheets in an excel file

... 273 You can still use the ExcelFile class (and the sheet_names attribute): xl = pd.ExcelFile('foo...
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Fast and responsive interactive charts/graphs: SVG, Canvas, other?

...kachostrokach 10.1k44 gold badges5353 silver badges7272 bronze badges add a comment  |  ...
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Comma separator for numbers in R?

...tthewRMatthewR 2,28433 gold badges1818 silver badges2727 bronze badges ...
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Rails: Adding an index after adding column

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How do you track record relations in NoSQL?

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C# Interfaces. Implicit implementation versus Explicit implementation

... Katelyn Kim 2722 bronze badges answered Sep 27 '08 at 11:07 mattlantmattlant 14.6k44 gold ...
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What's a quick way to test to see a file exists?

... TheNeil 1,27822 gold badges1010 silver badges3030 bronze badges answered Aug 31 '09 at 9:47 reinrein ...