2 files changed, 41 insertions, 0 deletions
diff --git a/challenge-110/lubos-kolouch/python/ch-1.py b/challenge-110/lubos-kolouch/python/ch-1.py
new file mode 100644
index 0000000000..c852da1766
--- /dev/null
+++ b/challenge-110/lubos-kolouch/python/ch-1.py
@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import re
+
+
+def valid_phone_numbers(filename):
+    with open(filename, 'r') as f:
+        contents = f.readlines()
+
+    valid_numbers = []
+
+    for line in contents:
+        if re.match(r"^(\+|\()?(\d{2,4})\)?(\s|\-)?\d{2,4}(\s|\-)?\d{2,4}(\s|\-)?\d{2,4}$", line.strip()):
+            valid_numbers.append(line.strip())
+
+    return valid_numbers
+
+
+print(valid_phone_numbers('phone_numbers.txt'))
diff --git a/challenge-110/lubos-kolouch/python/ch-2.py b/challenge-110/lubos-kolouch/python/ch-2.py
new file mode 100644
index 0000000000..7837aca6d7
--- /dev/null
+++ b/challenge-110/lubos-kolouch/python/ch-2.py
@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+def transpose_file(filename):
+    with open(filename, 'r') as f:
+        lines = f.readlines()
+
+    # Split each line into a list of fields
+    lines = [line.strip().split(',') for line in lines]
+
+    # Use zip() to transpose rows to columns
+    transposed = zip(*lines)
+
+    # Join the fields back together and write to a new file
+    with open('transposed_' + filename, 'w') as f:
+        for row in transposed:
+            f.write(','.join(row))
+            f.write('\n')
+
+
+transpose_file('input.txt')