From c8032e099d744449db90eeadd1455741609af8e1 Mon Sep 17 00:00:00 2001
From: lb1programmer <luke@linuxpc>
Date: Fri, 15 Oct 2021 23:00:10 -0700
Subject: [PATCH 1/2] Fix runnable example and add tests.

---
 matrix/inverse_of_matrix.py |  5 +++++
 matrix/rotate_matrix.py     | 14 ++++++++++++++
 matrix/spiral_print.py      | 15 +++++++++++++++
 3 files changed, 34 insertions(+)

diff --git a/matrix/inverse_of_matrix.py b/matrix/inverse_of_matrix.py
index 9deca6c3c08e..d487bf3a2a55 100644
--- a/matrix/inverse_of_matrix.py
+++ b/matrix/inverse_of_matrix.py
@@ -38,3 +38,8 @@ def inverse_of_matrix(matrix: list[list[float]]) -> list[list[float]]:
     swapped_matrix[1][0], swapped_matrix[0][1] = -matrix[1][0], -matrix[0][1]
     # Calculate the inverse of the matrix
     return [[float(D(n) / determinant) or 0.0 for n in row] for row in swapped_matrix]
+
+if __name__ == '__main__':
+    print('Inverse of matrix example: [[2, 5], [2, 0]]^-1:')
+    print(inverse_of_matrix([[2, 5], [2, 0]]))
+    
diff --git a/matrix/rotate_matrix.py b/matrix/rotate_matrix.py
index f638597ae35d..cae838ad928a 100644
--- a/matrix/rotate_matrix.py
+++ b/matrix/rotate_matrix.py
@@ -67,11 +67,25 @@ def transpose(matrix: list[list]) -> list[list]:
 
 
 def reverse_row(matrix: list[list]) -> list[list]:
+    """
+    Reverses rows
+    
+    >>> reverse_row([[1,3,5],[7,8,9],[1,0,1]])
+    [[1, 0, 1], [7, 8, 9], [1, 3, 5]]
+    
+    """
     matrix[:] = matrix[::-1]
     return matrix
 
 
 def reverse_column(matrix: list[list]) -> list[list]:
+    """
+    Reverses columns
+    
+    >>> reverse_column([[1,3,5],[7,8,9],[1,0,1]])
+    [[5, 3, 1], [9, 8, 7], [1, 0, 1]]
+    
+    """
     matrix[:] = [x[::-1] for x in matrix]
     return matrix
 
diff --git a/matrix/spiral_print.py b/matrix/spiral_print.py
index 6f699c1ab662..75062af07c8f 100644
--- a/matrix/spiral_print.py
+++ b/matrix/spiral_print.py
@@ -30,6 +30,21 @@ def check_matrix(matrix):
 
 
 def spiralPrint(a):
+    """
+    Prints matrix from outside in.
+    
+    >>> spiralPrint([[1, 2, 3],[8,9,4],[7,6,5]])
+    1
+    2
+    3
+    4
+    5
+    6
+    7
+    8
+    9
+    
+    """
     if check_matrix(a) and len(a) > 0:
         matRow = len(a)
         if isinstance(a[0], Iterable):

From cf2e9b444a3cbbf82e69a35d13189c238b4e16e6 Mon Sep 17 00:00:00 2001
From: programmin1 <lb1programmer@users.sourceforge.net>
Date: Sat, 16 Oct 2021 08:01:59 -0700
Subject: [PATCH 2/2] Update matrix/rotate_matrix.py

Co-authored-by: Christian Clauss <cclauss@me.com>
---
 matrix/rotate_matrix.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/matrix/rotate_matrix.py b/matrix/rotate_matrix.py
index cae838ad928a..a65ca3a233e4 100644
--- a/matrix/rotate_matrix.py
+++ b/matrix/rotate_matrix.py
@@ -70,7 +70,7 @@ def reverse_row(matrix: list[list]) -> list[list]:
     """
     Reverses rows
     
-    >>> reverse_row([[1,3,5],[7,8,9],[1,0,1]])
+    >>> reverse_row([[1, 3, 5], [7, 8, 9], [1, 0, 1]])
     [[1, 0, 1], [7, 8, 9], [1, 3, 5]]
     
     """