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How to apply multiple conditions in pandas with python?

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Administrator

by admin , in category: Discussion , 6 months ago

In Pandas, applying multiple conditions to filter or manipulate data is a common task. You can do this using boolean indexing or using methods like query() and loc[]. Here's how you can apply multiple conditions in Pandas:


Boolean Indexing:

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import pandas as pd


# Example DataFrame
df = pd.DataFrame({
    'A': [1, 2, 3, 4, 5],
    'B': [6, 7, 8, 9, 10],
    'C': ['x', 'y', 'x', 'y', 'x']
})


# Applying multiple conditions
result = df[(df['A'] > 2) & (df['B'] < 10)]


Using query():

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result = df.query('A > 2 & B < 10')

Using loc[] with multiple conditions:

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result = df.loc[(df['A'] > 2) & (df['B'] < 10)]

Each of these methods allows you to specify multiple conditions using logical operators like & (and), | (or), and ~ (not). You can combine multiple conditions within parentheses and use these logical operators to create complex conditions.

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