src/db_utils/frequency_scripts/create_n_fill_exon_frequency_file.py: fix...

src/db_utils/frequency_scripts/create_n_fill_exon_frequency_file.py: fix compute_gene_orf_data data function

src/db_utils/frequency_scripts/create_n_fill_exon_frequency_file.py

@@ -161,7 +161,7 @@ def compute_gene_orf_data(df: pd.DataFrame, ft_type_check: str = "aa",
                   suffixes=['_exon', '_gene'])
     df['new_freq'] = df['frequency'] * (df['length_exon'] / df['length_gene'])
     df_final = df[['id_gene', 'ft_type', 'ft', 'new_freq']].\
-        groupby(['id_gene', 'ft_type', 'ft']).sum().reset_index()
+        groupby(['id_gene', 'ft_type', 'ft']).sum(min_count=1).reset_index()
     df_final.rename(columns={"new_freq": 'frequency'}, inplace=True)
     return df_final