CAB106

Object Oriented Programming Using Python

6 units · 29 topics · 329 questions · 29 topic notes · practical course

Unit 1 Python and OOP introduction

This is a practical course: it is assessed through lab work, so there is no written MTE or ETE pattern here.

Question 1 · Tier 2, Understand

How does the standard CPython implementation run a .py file?

It translates the whole program into native machine code before any statement is allowed to run
It reads each source line as plain text and executes it directly with no compiled form at all
It compiles the source to bytecode, which the Python virtual machine then executes step by step
It converts the source to Java bytecode, which is then executed by a Java virtual machine

Show the answer

C. CPython compiles source to bytecode and the Python virtual machine interprets that bytecode.

Why not A: That describes an ahead-of-time compiler such as C, not CPython.

Why not B: CPython first compiles source to bytecode, so there is an intermediate form.

Why not D: Java bytecode belongs to the JVM; CPython uses its own bytecode and virtual machine.