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  2. pandas (software) - Wikipedia

    en.wikipedia.org/wiki/Pandas_(software)

    However, if data is a DataFrame, then data['a'] returns all values in the column(s) named a. To avoid this ambiguity, Pandas supports the syntax data.loc['a'] as an alternative way to filter using the index. Pandas also supports the syntax data.iloc[n], which always takes an integer n and returns the nth value, counting from 0. This allows a ...

  3. Nonconcatenative morphology - Wikipedia

    en.wikipedia.org/wiki/Nonconcatenative_morphology

    [2]: 72 An example from German is the stem spr⌂ch "speak", which results in various distinct forms such as spricht-sprechen-sprach-gesprochen-Spruch. [ 2 ] : 72 Changes such as foot/feet , on the other hand, which are due to the influence of a since-lost front vowel , are called umlaut or more specifically I-mutation .

  4. Concatenation - Wikipedia

    en.wikipedia.org/wiki/Concatenation

    However, the customers data table should not use one field to store that concatenated string; rather, the concatenation of the seven fields should happen upon running the report. The reason for such principles is that without them, the entry and updating of large volumes of data becomes error-prone and labor-intensive.