Function provided with comments

PythonTrainingGroupB/main.py

@@ -3,15 +3,37 @@
 from Portfolio import *
 
 def load_accounts(path):
+    """"
+    :param path: The name of the json file that serves as input.
+    :return: This function returns the json file such that it can be used for data analysis.
+    """
+
     f = open(path)
     return json.load(f)
 
 def add_new_account(path, accounts, new_username, new_password):
+    """"
+    add_new_account creates a new entry in the json database for new users with their username and the password.
+
+    :param path: the path where we want to write the output to.
+    :accounts: the json file of existing accounts that serves as input.
+    :new_username: The username specified by the user.
+    :new_password: The password specified by the user.
+    :return: This function updates the json file with account information of the new user.
+    """
+
     accounts[new_username] = new_password
     with open(path, 'w') as fp:
         json.dump(accounts, fp)
 
 def login(accounts):
+    """
+    login asks the user whether they want to sign up, or want to log in to their existing account.
+
+    :param accounts: the json file of existing accounts.
+    :return: This returns the username of the new or existing user.
+    """
+
     print("Welcome to our Investment Game! If you want to sign up, press '0'. If you already have an account, press '1' to log in.")
 
     choice = int(input("Please make your choice: "))
@@ -24,6 +46,13 @@ def login(accounts):
         return login
 
 def new_login(accounts):
+    """"
+    new_login asks the user for a username and password, which will be documented in the system.
+
+    :param accounts: the json file of existing accounts.
+    :return: This returns the new username.
+    """
+
     new_username = input("Please enter a username: ")
     while new_username in accounts:
         print("User name already exists, please enter another username: ")
@@ -38,6 +67,13 @@ def new_login(accounts):
 
 
 def existing_login(accounts):
+    """"
+    exisiting_login asks the user for its username and password, in order to log in.
+
+    :param accounts: the json file of existing accounts.
+    :return: This returns the existing username.
+    """
+
     print("Please enter you username.")
 
     while True: