Added comments

api/app/blueprints/transactions.py

@@ -27,6 +27,7 @@ __location__ = os.path.realpath(os.path.join(os.getcwd(), os.path.dirname(__file
 def add_transaction(data):
     email = get_email_or_abort_401()
 
+    # Check if required data is available
     if not check_if_symbol_data_exists(data):
         abort(400, "Symbol missing")
 
@@ -39,6 +40,7 @@ def add_transaction(data):
     if not check_if_price_data_exists(data):
         abort(400, "Price missing")
 
+    # Add transaction
     new_transaction = Transaction(
         email=email,
         symbol=data['symbol'],
@@ -60,8 +62,11 @@ def get_transaction():
     email = get_email_or_abort_401()
 
     return_transactions = []
+
+    # Get all transactions
     transactions = db.session.query(Transaction).filter_by(email=email).all()
 
+    # Iterate over transactions and add them to return_transactions
     if transactions is not None:
         for row in transactions:
             return_transactions.append(row.as_dict())