Add test command in test_utilize_date.py

Author: Guyunjeong

projects/Calculate Age/tests/test_utilize_date.py

@@ -1,6 +1,7 @@
 import pytest
 from utilize_date import judge_leap_year, month_days
 
+
 def test_judge_leap_year():
     assert judge_leap_year(2000) == True
     assert judge_leap_year(2008) == True
@@ -9,10 +10,13 @@ def test_judge_leap_year():
     assert judge_leap_year(2400) == True
     assert judge_leap_year(2100) == False
 
+
 def test_month_days():
     assert month_days(7, False) == 31
     assert month_days(4, True) == 30
     assert month_days(2, True) == 29
     assert month_days(2, False) == 28
     assert month_days(1, False) == 31
-    assert month_days(11, True) == 30
+    assert month_days(11, True) == 30
+
+# "pytest -s test_calculate.py" to test this file