ode</span>
</summary>
<pre><code class="python">def remove_identical_columns(df):
    &#39;&#39;&#39;
    Remove columns from a DataFrame that have identical values across all rows.

    Parameters:
    df (DataFrame): The DataFrame to process.

    Returns:
    DataFrame: A DataFrame with identical columns removed.
    &#39;&#39;&#39;
    columns_to_drop = [col for col in df.columns if df[col].nunique() == 1]
    df_cleaned = df.drop(columns=columns_to_drop)
    
    return df_cleaned</code></pre>
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