diff --git a/src/topupopt/data/gis/calculate.py b/src/topupopt/data/gis/calculate.py
index ad236f7155e17d3b73fda4e3b8dc87079026c815..03586a290ef4c414c6c60f9da7b41b5244958849 100644
--- a/src/topupopt/data/gis/calculate.py
+++ b/src/topupopt/data/gis/calculate.py
@@ -341,4 +341,4 @@ def count_ocurrences(gdf: GeoDataFrame,
     return count_dict
 
 # *****************************************************************************
-# *****************************************************************************
\ No newline at end of file
+# *****************************************************************************
diff --git a/src/topupopt/data/gis/identify.py b/src/topupopt/data/gis/identify.py
index 1449bac2ec09331a9c914c80dd846e3e8fb7cd48..33ccd46ce1eca3398895d557224b2339108489eb 100644
--- a/src/topupopt/data/gis/identify.py
+++ b/src/topupopt/data/gis/identify.py
@@ -1030,7 +1030,6 @@ def is_path_straight(network: nx.MultiDiGraph,
     # confirm that it is a path
     if not is_node_path(network, path, consider_reversed_edges):
         return False
-    
     # a straight path requires at least two nodes
     path_length = len(path)
     if path_length == 2:
@@ -1161,7 +1160,6 @@ def find_simplifiable_paths(network: nx.MultiDiGraph,
         if consider_reversed_edges and include_both_directions:
             # directions do not matter: 
             list_paths.append(new_sequence[::-1])
-            
         # update the list of intermediate nodes already on paths             
         list_nodes_joined.update(set(new_sequence[1:-1]))
     
@@ -1308,7 +1306,7 @@ def _find_path_direction_sensitive(
         )
     # cycles have to be detected on the first try
     if len(path) >= 3 and path[0] == path[-1]:  
-        # it is a cycle: no need to seedgeh backwards
+        # it is a cycle: no need to search backwards
         return path
     # find the backward path segment
     return find_path_backward(
@@ -1733,4 +1731,4 @@ def identify_edge_closest_to_node(
     return nearest_edge_keys, projected_network
 
 # *****************************************************************************
-# *****************************************************************************
\ No newline at end of file
+# *****************************************************************************
diff --git a/src/topupopt/data/gis/modify.py b/src/topupopt/data/gis/modify.py
index 97990b5ae4f26491df72bc19dc5b583ad68c7155..4bb3c583504fefabd25a0a83346b682be79e2888 100644
--- a/src/topupopt/data/gis/modify.py
+++ b/src/topupopt/data/gis/modify.py
@@ -378,7 +378,6 @@ def replace_path(
     edge_length = 0
     
     for node_pair_index in range(len(path)-1): 
-        
         # get one edge for this node pair
         edge_key = list(gis_iden.get_edges_between_two_nodes(
             network, 
@@ -388,8 +387,7 @@ def replace_path(
         edge_key = sorted(
             (network.edges[_key][osm.KEY_OSMNX_LENGTH], _key)
             for _key in edge_key
-            )[0][1]
-        
+            )[0][1]        
         if osm.KEY_OSMNX_GEOMETRY in network.edges[edge_key]:
             # geometry exists: possibly a composite geometry
             # check if the geometry is consistent with the edge declaration
@@ -1388,4 +1386,4 @@ def create_reverse_edges(
     return edges_created
         
 # *****************************************************************************
-# *****************************************************************************
\ No newline at end of file
+# *****************************************************************************
diff --git a/src/topupopt/data/gis/utils.py b/src/topupopt/data/gis/utils.py
index bd64e2e8db349187a1043c4a711314eaa1f7dfc3..3ad38ee9f8ce5a0eeec56971a8ff7de815cfe50e 100644
--- a/src/topupopt/data/gis/utils.py
+++ b/src/topupopt/data/gis/utils.py
@@ -1024,7 +1024,6 @@ def identify_building_entrance_edges(
         # otherwise, the edge is nameless but may not lead to the right street
         
         # get adjacent/neighbouring edges
-        
         other_edges = gis_iden.get_edges_involving_node(
             network=network,
             node_key=closest_edge_key[0],
@@ -1214,9 +1213,7 @@ def convert_edge_path(network: MultiDiGraph,
         
     # path is a sequence of edge keys: convert to node path
     if allow_reversed_edges:
-        
         # reverse edges are allowed
-    
         # drop self-loops, if any
         edge_path = [
             edge_key
@@ -1261,4 +1258,4 @@ def convert_edge_path(network: MultiDiGraph,
     return node_path
     
 # *****************************************************************************
-# *****************************************************************************
\ No newline at end of file
+# *****************************************************************************
diff --git a/tests/test_gis_identify.py b/tests/test_gis_identify.py
index 0486809bef0c5217528820c6d2707b4c9cc8b0aa..1d62f7c0df27e95ed7068fa773ce1b7284ae7122 100644
--- a/tests/test_gis_identify.py
+++ b/tests/test_gis_identify.py
@@ -30,7 +30,7 @@ class TestGisIdentify:
             path: list, 
             excluded_nodes: list,
             consider_reversed_edges: bool,
-            ignore_self_loops: bool):    
+            ignore_self_loops: bool):
         # find out the unique nodes
         set_nodes = set(path)
         # at least three nodes
@@ -4542,6 +4542,10 @@ class TestGisIdentify:
     # *************************************************************************
     # *************************************************************************
     
+<<<<<<< HEAD
+#******************************************************************************
+#******************************************************************************
+=======
     def test_finding_roundabouts(self):
         
         # network should be a OSM-nx formatted graph
diff --git a/tests/test_gis_modify.py b/tests/test_gis_modify.py
index a6b718194da09e93fd4ff11bd820ca9977bc38ee..a7bb81e1899496eb285563b0991b915fbacb1cd5 100644
--- a/tests/test_gis_modify.py
+++ b/tests/test_gis_modify.py
@@ -3274,4 +3274,4 @@ class TestGisModify:
         # TODO: test the conversion itself
         
 # *****************************************************************************
-# *****************************************************************************
\ No newline at end of file
+# *****************************************************************************
diff --git a/tests/test_gis_utils.py b/tests/test_gis_utils.py
index 19c60408aacc3e7a6bc171f4d7efaa55ae1ea4e1..ea06e9eb52ab81008d76e3b300231ed3576215fd 100644
--- a/tests/test_gis_utils.py
+++ b/tests/test_gis_utils.py
@@ -944,7 +944,6 @@ class TestGisUtils:
             country_code=country_code)
         
         # find out which is the closest edge
-        
         nearest_edge_keys, network = gis_iden.identify_edge_closest_to_node(
             network,
             node_keys=['P'])
@@ -2143,4 +2142,4 @@ class TestGisUtils:
     # *************************************************************************
         
 # *****************************************************************************
-# *****************************************************************************
\ No newline at end of file
+# *****************************************************************************