अमान्य पंक्तियों की जाँच

# Determine the row counts for each DataFrame
split_count = ____
joined_count = ____

# Create a DataFrame containing the invalid rows
invalid_df = split_df.____(____(joined_df), '____', '____')

# Validate the count of the new DataFrame is as expected
invalid_count = ____
print(" split_df:\t%d\n joined_df:\t%d\n invalid_df: \t%d" % (split_count, joined_count, invalid_count))

# Determine the number of distinct folder rows removed
invalid_folder_count = invalid_df.____('____').____.____
print("%d distinct invalid folders found" % invalid_folder_count)