Add comprehension expressions to analyse group data

group.py

@@ -2,4 +2,64 @@
 
 # Your code to go here...
 
-my_group =
+my_group = [
+    {
+        'name': 'Jill',
+        'age': 26,
+        'job':'a biologist',
+        'connection': {
+            'friend': ['Zalika'],
+            'partner': ['John']
+        }
+    },
+    {
+        'name': 'Zalika',
+        'age': 28,
+        'job':'an artist',
+        'connection': {
+            'friend' : ['Jill']
+            }
+    },
+    {
+        'name': 'John',
+        'age': 27,
+        'job':'a writer',
+        'connection': {
+            'partner' : ['Jill']
+            }
+    },
+    {
+        'name': 'Nash',
+        'age': 34,
+        'job':'a chef',
+        'connection': {
+            'cousin' : ['John'], 
+            'landlord' : ['Zalika']
+            }
+    }
+]
+
+def print_my_group():
+    for row in my_group:
+        connections = " and ".join([f"{', '.join(map(str, v))}'s {k}" for k, v in row["connection"].items() if v])
+        print(f"{row['name']} is {row['age']}, {row['job']}, {connections}")
+    print("\n")
+
+
+
+# the maximum age of people in the group
+max_age = max([v['age'] for v in my_group])
+print(f'the maximum age of people in the group is {max_age}')
+
+# the average (mean) number of relations among members of the group
+relations_count = [len(person['connection']) for person in my_group]
+avg_relations = sum(relations_count) / len(relations_count)
+print(f'The average (mean) number of relations among members of the group is {avg_relations:.2f}')
+
+# the maximum age of people in the group that have at least one relation
+_max_age = max([v['age'] for v in my_group if len(v['connection']) > 0])
+print(f'the maximum age of people in the group that have at least one relation is {_max_age}')
+
+# [more advanced] the maximum age of people in the group that have at least one friend
+_max_age_ = max([v['age'] for v in my_group if 'friend' in v['connection'] and v['connection']['friend']])
+print(f'the maximum age of people in the group that have at least one friend is {_max_age_}')