Computer scienceData scienceInstrumentsPandasData preprocessing with pandas

Conditional selection

Conditionals

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Take a look at the df dataframe:

+----+-----------+-----------+
|    | column1   |   column2 |
|----+-----------+-----------|
|  0 | a         |         1 |
|  1 | b         |         2 |
|  2 | c         |         3 |
+----+-----------+-----------+

Which option will select the rows with b in the column1 or the rows with values less than 3 in the column2 ?

Select one option from the list

df[(df.column1 == 'b') & (df.column2 < 3)]

df[(df.column1 == 'b') | (df.column2 < 3)]

df[(df.column1 == b) | (df.column2 < 3)]

df[df.column1 == 'b' or df.column2 < 3]

df[df.column1 == 'b' | df.column2 < 3]

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