ied data.
    &#34;&#34;&#34;
    logger_function(log, locals(), inspect.currentframe().f_code.co_name)

    classifedDF= df[df[classification_col].notna()] #Already-classifed data
    searchDF = df[df[classification_col].isna()] #Unclassified data
        
    return classifedDF, searchDF

#Classify downhole data by the initial substring
def start_define(df, terms_df, description_col=&#39;FORMATION&#39;, terms_col=&#39;DESCRIPTION&#39;, verbose=False, log=False):
    &#34;&#34;&#34;Function to classify des