lab solved

functions.py

@@ -0,0 +1,28 @@
+# functions.py
+
+import string
+
+# 1. Returns a new list with unique elements (keeps first appearance)
+def get_unique_list_f(lst):
+    unique = []
+    for item in lst:
+        if item not in unique:
+            unique.append(item)
+    return unique
+
+
+# 2. Counts uppercase and lowercase letters in a string
+def count_case_f(string):   
+    upper_count = sum(1 for char in string if char.isupper())
+    lower_count = sum(1 for char in string if char.islower())
+    return upper_count, lower_count
+
+# 3. Removes punctuation marks from a sentence
+def remove_punctuation_f(sentence):
+    return ''.join(char for char in sentence if char not in string.punctuation)
+
+# 4. Counts the number of words in a given sentence after removing punctuation
+def word_count_f(sentence):
+    clean_sentence = remove_punctuation_f(sentence)
+    words = clean_sentence.split()
+    return len(words)