task2, added case with dot

TaskB01/task1.py

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+import regex as re
+
+with open('shakespeare.in', encoding='utf8') as file:
+    lines = file.readlines()
+    pattern = re.compile(r'Hamlet')
+    for line in lines:
+        line = line.strip()
+        x = re.search(pattern, line)
+        if x:
+            print(line)

TaskB02/task2.py

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+import regex as re
+
+with open('polish_wiki_excerpt.in', encoding='utf8') as file:
+    lines = file.readlines()
+    pattern = r'( |[Pp])ies(( \w+)|(\.$))'
+    for line in lines:
+        line = line.strip()
+        x = re.search(pattern, line)
+        if x:
+            print(line)

TaskB03/task3.py

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+import re
+
+with open('polish_wiki_excerpt.in', encoding='utf8') as file:
+    lines = file.readlines()
+    pattern = r'19\d\d r\.'
+    for line in lines:
+        line = line.strip()
+        x = re.search(pattern, line)
+        if x:
+            print(line)

TaskB04/task4.py

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+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))