Using a dictionary as a repository

Now, we will create a SurfboardMetricManager class that we will use to persist the SurfboardMetricModel instances in an in-memory dictionary. Our API methods will call methods for the SurfboardMetricManager class to retrieve, insert, and delete SurfboardMetricModel instances.

Stay in the metrics.py file in the metrics/metrics/models subfolder. Add the following lines to declare the SurfboardMetricManager class. The code file for the sample is included in the restful_python_2_09_01 folder, in the Pyramid01/metrics/metrics/models/metrics.py file:

class SurfboardMetricManager(): 
    last_id = 0 
    def __init__(self): 
        self.metrics = {} 
 
    def insert_metric(self, metric): 
        self.__class__.last_id += 1 
        metric.id = self.__class__.last_id 
        self.metrics[self.__class__.last_id] = metric 
 
    def get_metric(self...