Adding changes that print out the requested values

group.json

@@ -0,0 +1,32 @@
+{
+   "Jill": {
+      "age": 26,
+      "job": "biologist",
+      "relations": {
+         "Zalika": "friend",
+         "John": "partner"
+      }
+   },
+   "Zalika": {
+      "age": 28,
+      "job": "artist",
+      "relations": {
+         "Jill": "friend"
+      }
+   },
+   "John": {
+      "age": 27,
+      "job": "writer",
+      "relations": {
+         "Jill": "partner"
+      }
+   },
+   "Nash": {
+      "age": 34,
+      "job": "chef",
+      "relations": {
+         "John": "cousin",
+         "Zalika": "landlord"
+      }
+   }
+}

group.py

@@ -1,5 +1,116 @@
 """An example of how to represent a group of acquaintances in Python."""
 
+# ATTEMPT 1:  USING CLASSES BUT IT GOT TOO COMPLICATED WITH SELF 
+""" 
+#Clearing out variables 
+jill = []
+zalika = []
+
 # Your code to go here...
+class Person:
+    def __init__(self, name, age, job, connection= [] ):
+        self.name = name
+        self.age = age
+        self.job =job
+        self.connection = connection
+
+    def add_connection(self, friend, relationship):
+        #Problem: This also updates the connection of the friend using self of person and person's friend 
+        #self.connection.update({friend.name: relationship})
+        self.connection.append({friend.name : relationship})
+
+
+jill=Person('Jill', 26, 'biologist')
+zalika = Person('Zalika', 28, 'artist')
+john=Person('John', 27, 'writer')
+#nash=Person('Nash', 34, 'chef')
+
+jill.add_connection(zalika, 'friend')
+jill.add_connection(john, 'partner')
+print("Jill's connection: ", jill.connection)
+zalika.add_connection(jill, 'friend')
+print("Zalika's connection: ", zalika.connection)
+"""
+
+# ATTEMPT 2: Using dictionary of dictionaries 
+
+group = {
+    "Jill": {
+        "age": 26,
+        "job": "biologist",
+        "relations": {
+            "Zalika": "friend",
+            "John": "partner"
+        }
+    },
+    "Zalika": {
+        "age": 28,
+        "job": "artist",
+        "relations": {
+            "Jill": "friend"
+        }
+    },
+    "John": {
+        "age": 27,
+        "job": "writer",
+        "relations": {
+            "Jill": "partner"
+        }
+    },
+    "Nash": {
+        "age": 34,
+        "job": "chef",
+        "relations": {
+            "John": "cousin",
+            "Zalika": "landlord"
+        }
+    }
+}
+
+#Unpacking things in nested dictionary of dictionaries : member name is string, member is actual dictionary value with its items
+[print(member['age']) for member_name, member in group.items()]
+
+# 1. Max age of people in the group 
+#Not proper comprehensions --> Comprehensions make a list already 
+#ages = []
+#[ages.append(member['age']) for member_name, member in group.items()]
+
+#Making use of proper comprehensions
+ages = [person["age"] for person in group.values()]
+print("Maximum age of group: ", max(ages)) 
+
+# 2. Average (mean) number of relations among members of the group 
+no_relations = [len(member['relations']) for member_name, member in group.items()]
+avg_relations = sum(no_relations) / len(no_relations)
+print("Average number of relations: " , avg_relations)
+
+# 3. The maximum age of people in the group that have at least one relation 
+ages_1relation = [member['age'] for member_name, member in group.items() if len(member['relations']) > 0 ]
+print("Max age of people in the group that have at least one relation: ", max(ages_1relation))
+
+#4. Maximum age of people in the group that have at least one friend 
+print('friend' in group['Jill']['relations'].values()) #Test if friend is in relations.values
+ages_wfriends = [member['age'] for member_name, member in group.items() if ('friend' in member['relations'].values())]
+print('Maximum age of people w/at least one friend: ', max(ages_wfriends))
+
+""" Working with JSON files """ 
+import json 
+
+# Writing group dictionary to json file format 
+with open('group.json', 'w') as json_file:
+
+    #Writes dictionary group into json format to be placed inside file : ie string 
+    json_format = json.dumps(group, indent = 3)
+
+    #Writes json formatted text to the json file
+    json_file.write(json_format) #or could've done: json_file.write(json.dumps(group, indent =3 )
+#Reading json file
+with open('group.json', 'r') as json_file_read:
+    string_data = json_file_read.read()
+#print(string_data)
+
+# Turning the read data into json format 
+group_read = json.loads(string_data)
 
-my_group =
+#Access jill contents 
+#print(group_read['Jill'])