implement my own four comprehension expressions to my group previous work

group.py

@@ -1,5 +1,110 @@
-"""An example of how to represent a group of acquaintances in Python."""
+"""Summary data from group #7"""
 
 # Your code to go here...
 
-my_group =
+my_group = [
+    {
+        "name": "Jill",
+        "age": 26,
+        "job": "Biologist",
+        "relations": [
+            {"name": "Zalika", "relationship": "friend"},
+            {"name": "John", "relationship": "partner"}
+        ]
+    }, 
+    {
+        "name": "Zalika",
+        "age": 28,
+        "job": "Artist",
+        "relations": [
+            {"name": "Jill", "relationship": "friend"}
+        ]
+    }, 
+    {
+        "name": "John",
+        "age": 27,
+        "job": "Writer",
+        "relations": [
+            {"name": "Jill", "relationship": "partner"},
+            {"name": "Nash", "relationship": "cousin"}
+        ]
+    }, 
+    {
+        "name": "Nash",
+        "age": 34,
+        "job": "Chef",
+        "relations": [
+            {"name": "John", "relationship": "cousin"},
+            {"name": "Zalika", "relationship": "landlord"}
+        ]
+    }
+]
+
+def print_my_group():
+    for people in my_group:
+        print(f"{people['name']} is {people['age']}, a/an {people.get('job', 'No job')}, ", end='')
+        relations = [f"{connection['name']}'s {connection['relationship']}" for connection in people['relations']]
+        print(f"{' and '.join(relations)}")
+
+def forget(person1, person2):
+    for person in my_group:
+        if person["name"] == person1:
+            person["relations"] = [c for c in person["relations"] if c["name"] != person2]
+        if person["name"] == person2:
+            person["relations"] = [c for c in person["relations"] if c["name"] != person1]
+
+def add_person(name, age, job, relations):
+    new_person = {
+            "name": name,
+            "age": int(age),
+            "job": job,
+            "relations": relations
+    }
+    my_group.append(new_person)
+
+def avg_age():
+    total_ages = 0
+    for person in my_group:
+        total_ages += person['age']
+    average_age = total_ages / len(my_group)
+    print(f"The average age of my group is {average_age}")
+
+"""print_my_group()
+forget("Jill", "John")
+add_person("Jiasheng", 24, "HPC Engineer", [{"name": "Jill", "relationship": "friend"}])
+print_my_group()
+avg_age()
+"""
+
+"""Implement my own functions"""
+
+# Q1: the maximum age of people in the group
+max_age = max([person['age'] for person in my_group])
+print(f"the maximum age of people in the group: {max_age}")
+
+# Q2: the average (mean) number of relations among members of the group
+avg_relation = sum(len(person['relations']) for person in my_group) / len(my_group)
+print(f"the average (mean) number of relations among members of the group: {avg_relation}")
+
+# Q3: the maximum age of people in the group that have at least one relation
+max_age_one_relation = max([person['age'] for person in my_group if person['relations']])
+print(f"the maximum age of people in the group that have at least one relation: {max_age_one_relation}")
+
+# Q4: the maximum age of people in the group that have at least one friend
+person_with_friend = []
+for person in my_group:
+    for rel in person['relations']:
+        if rel['relationship'] == 'friend':
+            person_with_friend.append(person['age'])
+max_age_one_friend = max(person_with_friend)
+print(f"the maximum age of people in the group that have at least one friend: {max_age_one_friend}")
+
+"""
+[more advanced method for Q4] this method taught by my team member during the class 
+utilize the generator expression with any() function
+"""
+max_age_friend_advanced = max(
+    (person['age'] for person in my_group if any(rel['relationship'] == 'friend' for rel in person['relations'])),
+    default=None
+)
+print(f"the advanced method utilizing the generator expression with any() function: {max_age_friend_advanced}")