Selecting Columns

Accessing columns is one of the most common operations in Pandas. There are multiple ways to select columns from a DataFrame.

Single Column Selection

Use bracket notation or dot notation:

Multiple Column Selection

Use double brackets with a list of column names:

Series vs DataFrame

Single bracket returns a Series, double brackets return a DataFrame:

Selecting by Data Type

Select columns based on their data type:

Exercise: Select Columns

Exercise: Numeric Columns

Key Points

• df['column'] returns a Series
• df[['col1', 'col2']] returns a DataFrame
• Dot notation df.column only works for valid Python identifiers
• select_dtypes() filters columns by data type
• Column order in result matches the order specified