TDD Pandas - Create fixture from repeated input data

PyCon_PL/Readme.md

@@ -1,3 +1,4 @@
 1. [Grzegorz Kocjan - Test Driven Pandas](https://youtu.be/oaADte_9u6Q)
     - [Folder](./Test_Driven_Pandas/)
-    - [Link](https://belazy.dev/talks/test-driven-pandas/)
+    - [Link](https://belazy.dev/talks/test-driven-pandas/)
+    - [Pytest Fixture Ref](https://twpower.github.io/19-about-python-test-fixture)

PyCon_PL/Test_Driven_Pandas/tests/test_gradebook.py

@@ -1,4 +1,5 @@
 import pandas as pd 
+import pytest 
 from typing import cast
 
 def _create_group(raw_students_group:pd.DataFrame) -> pd.DataFrame:
@@ -45,8 +46,8 @@ def test_results_are_grouped_by_student_group_for_students_in_multiple_group():
     result = generate_gradebook(students_df=students_df)
     assert list(result.keys()) == [1, 2]
 
-    
-def test_results_group_contains_students_net_id_lowercase():
+@pytest.fixture
+def two_students_in_the_same_group() -> pd.DataFrame():
     students = [
         {
             "ID": 1,
@@ -63,32 +64,17 @@ def test_results_group_contains_students_net_id_lowercase():
             "Group": 1,
         },
     ]
-    students_df = pd.DataFrame(data=students).set_index("ID")
+    return pd.DataFrame(data=students).set_index("ID")
 
-    result = generate_gradebook(students_df=students_df)
+def test_results_group_contains_students_net_id_lowercase(two_students_in_the_same_group):
+
+    result = generate_gradebook(students_df=two_students_in_the_same_group)
 
     assert result[1]["net_id"].to_list() == ["jxd12345", "sxd54321"]
 
-def test_results_group_contains_students_email_address_lowercase():
-    students = [
-        {
-            "ID": 1,
-            "Name": "Doe, John",
-            "NetID": "JXD12345",
-            "Email Address": "[email protected]",
-            "Group": 1,
-        },
-        {
-            "ID": 2,
-            "Name": "Doe, Second",
-            "NetID": "SXD54321",
-            "Email Address": "[email protected]",
-            "Group": 1,
-        },
-    ]
-    students_df = pd.DataFrame(data=students).set_index("ID")
+def test_results_group_contains_students_email_address_lowercase(two_students_in_the_same_group):
 
-    result = generate_gradebook(students_df = students_df)
+    result = generate_gradebook(students_df = two_students_in_the_same_group)
 
     assert result[1]['email_address'].to_list() == [ 
                                                     '[email protected]',