Remove useless code in doctests (#7733)

* refactor: Fix matrix display deprecation

* refactor: Remove useless `print` and `pass` statements

* revert: Replace broken doctests

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* revert: Fix failing doctests

* chore: Satisfy pre-commit

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

graphs/gale_shapley_bigraph.py

@@ -17,7 +17,7 @@ def stable_matching(
 
     >>> donor_pref = [[0, 1, 3, 2], [0, 2, 3, 1], [1, 0, 2, 3], [0, 3, 1, 2]]
     >>> recipient_pref = [[3, 1, 2, 0], [3, 1, 0, 2], [0, 3, 1, 2], [1, 0, 3, 2]]
-    >>> print(stable_matching(donor_pref, recipient_pref))
+    >>> stable_matching(donor_pref, recipient_pref)
     [1, 2, 3, 0]
     """
     assert len(donor_pref) == len(recipient_pref)

graphs/graph_list.py

@@ -18,7 +18,7 @@ class GraphAdjacencyList(Generic[T]):
 
     Directed graph example:
     >>> d_graph = GraphAdjacencyList()
-    >>> d_graph
+    >>> print(d_graph)
     {}
     >>> d_graph.add_edge(0, 1)
     {0: [1], 1: []}
@@ -26,7 +26,7 @@ class GraphAdjacencyList(Generic[T]):
     {0: [1], 1: [2, 4, 5], 2: [], 4: [], 5: []}
     >>> d_graph.add_edge(2, 0).add_edge(2, 6).add_edge(2, 7)
     {0: [1], 1: [2, 4, 5], 2: [0, 6, 7], 4: [], 5: [], 6: [], 7: []}
-    >>> print(d_graph)
+    >>> d_graph
     {0: [1], 1: [2, 4, 5], 2: [0, 6, 7], 4: [], 5: [], 6: [], 7: []}
     >>> print(repr(d_graph))
     {0: [1], 1: [2, 4, 5], 2: [0, 6, 7], 4: [], 5: [], 6: [], 7: []}
@@ -68,7 +68,7 @@ class GraphAdjacencyList(Generic[T]):
      {'a': ['b'], 'b': ['a']}
      >>> char_graph.add_edge('b', 'c').add_edge('b', 'e').add_edge('b', 'f')
      {'a': ['b'], 'b': ['a', 'c', 'e', 'f'], 'c': ['b'], 'e': ['b'], 'f': ['b']}
-     >>> print(char_graph)
+     >>> char_graph
      {'a': ['b'], 'b': ['a', 'c', 'e', 'f'], 'c': ['b'], 'e': ['b'], 'f': ['b']}
     """
 

graphs/minimum_spanning_tree_prims2.py

@@ -69,16 +69,16 @@ class MinPriorityQueue(Generic[T]):
     >>> queue.push(3, 4000)
     >>> queue.push(4, 3000)
 
-    >>> print(queue.extract_min())
+    >>> queue.extract_min()
     2
 
     >>> queue.update_key(4, 50)
 
-    >>> print(queue.extract_min())
+    >>> queue.extract_min()
     4
-    >>> print(queue.extract_min())
+    >>> queue.extract_min()
     1
-    >>> print(queue.extract_min())
+    >>> queue.extract_min()
     3
     """
 

graphs/random_graph_generator.py

@@ -53,7 +53,7 @@ def complete_graph(vertices_number: int) -> dict:
     @input: vertices_number (number of vertices),
             directed (False if the graph is undirected, True otherwise)
     @example:
-    >>> print(complete_graph(3))
+    >>> complete_graph(3)
     {0: [1, 2], 1: [0, 2], 2: [0, 1]}
     """
     return {