Fix some lint issues.

PiperOrigin-RevId: 812997263

Author: tcya

metrics.py

@@ -1404,7 +1404,7 @@ def get_sql_and_with_clause(self, table, split_by, global_filter, indexes,
     children_sql_copy = copy.deepcopy(children_sql)
     incompatible_sqls = sql.Datasources()
     child_table_aliases = []
-    for i, child_sql in enumerate(children_sql):
+    for child_sql in children_sql:
       child_table_aliases.append(
           incompatible_sqls.merge(
               sql.Datasource(child_sql, 'MetricListChildTable')
@@ -1803,6 +1803,7 @@ def get_sql_and_with_clause(self, table, split_by, global_filter, indexes,
                                          indexes, local_filter, with_data)
 
   def get_sql_columns(self, local_filter):
+    del local_filter  # unused
     raise ValueError('get_sql_columns is not implemented for %s.' % type(self))
 
 

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "meterstick"
-version = "1.5.7"
+version = "1.5.8"
 authors = [
   { name="Xunmo Yang", email="xunmo@google.com" },
   { name="Dennis Sun", email="dlsun@google.com" },

sql.py

@@ -218,7 +218,7 @@ def nth_fn_default(
     raise NotImplementedError('Nth value is not implemented.') from e
 
 
-def uniform_mapping_fn_not_implemented(c):
+def uniform_mapping_fn_not_implemented(_):
   raise NotImplementedError('Uniform mapping is not implemented.')
 
 

utils.py

@@ -538,7 +538,7 @@ def get_equivalent_metric_tree(m, df=None, prefix=''):
     return res
   if not m.get_equivalent(*m.get_auxiliary_cols()):
     return m
-  equiv, df = get_equivalent_metric(m, df, prefix)
+  equiv, _ = get_equivalent_metric(m, df, prefix)
   return equiv