How to change this append() to concat() and achieve the same result?

Question

This this code is suppose to create new df from the original. In sales there are material code and it creates a new df for every material code that are in partial_list. After that it goes through the original df and takes out and pastes the rows into the right dataframe with append(). Now that append is deprecated how do i change this to concat() and make it work the same?

# Create new dataframes
for code in partial_list:
    globals()['df_'+code] = pd.DataFrame(columns=sales.columns)

# Loop through the original dataframe and add the rows to the new dataframes
for i, row in sales.iterrows():
    if row['Material'] in partial_list:
        globals()['df_'+row['Material']] = globals()['df_'+row['Material']].append(row, ignore_index=True)
        sales = sales.drop(i)