Learn Programming in Python with Cody Jackson

Base pump class

First, we will define a base Pump class, much like we did for valves, as shown in the following code:

# pump.py (part 1)1  #!/usr/bin/env python3 
2  """ 
3  VirtualPLC pump.py 
4 
5  Purpose: Creates a generic Pump class for PLC-controlled SCADA systems. 
6
7  Classes: 
8      Pump: Generic superclass 
9      CentrifPump: Pump subclass; provides for a variable displacement pump 
10     PositiveDisplacement: Pump subclass; provides for a positive displacement pump 
11
12  Author: Cody Jackson 
13 
14  Date: 4/12/18 
15  ################################# 
16  Version 0.2 
17          Added path extension to alleviate errors 
18  Version 0.1 
19      Initial build 
20  """ 

Lines 1-20 are similar to what we've seen before, with the basic program information:

# pump.py (part 2)1 import ...