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General Functions in Python

Pandas: How to Rename Only the Last Column in DataFrame

You can use the following basic syntax to rename only the last column in a pandas DataFrame: df.columns = , 'new_name'] This particular example renames the...

Pandas: Extract Column Value Based on Another Column

You can use the query() function in pandas to extract the value in one column based on the value in another column. This function uses...

Pandas: How to Sort Rows by Absolute Value

You can use the following methods to sort the rows of a pandas DataFrame based on the absolute value of a column: Method 1: Sort...

How to Calculate Mean, Median and Mode in Pandas

You can use the following functions to calculate the mean, median, and mode of each numeric column in a pandas DataFrame: print(df.mean(numeric_only=True)) print(df.median(numeric_only=True)) print(df.mode(numeric_only=True)) The following example shows...

Pandas: How to Filter Rows Based on Values in a List

You can use the following basic syntax to filter the rows of a pandas DataFrame that contain a value in a list: df.isin()] This particular example...

Pandas: Create Frequency Table Based on Multiple Columns

You can use the following basic syntax to create a frequency table in pandas based on multiple columns: df.value_counts() The following example shows how to use...

How to Swap Two Rows in Pandas (With Example)

You can use the following custom function to swap the position of two rows in a pandas DataFrame: def swap_rows(df, row1, row2): ...

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