task 4 done to check

TaskB04/task4.py

@@ -0,0 +1,10 @@
+import re
+
+with open('polish_wiki_excerpt.in', encoding='utf8') as file:
+    lines = file.readlines()
+    pattern = r'\d+'
+    for line in lines:
+        line = line.strip()
+        x = re.findall(pattern, line)
+        if x:
+            print(' '.join(x))