Python Basics

Runtime Error

If your program needs to read data from a file, but the file does not exist, an error would occur when running this program. What kind of error is this?

syntax errors, runtime errors, and logic errors

What are three kinds of program errors?

Python was created by _____

Guido van Rossum

____ is an object-oriented programming language.

Java, C++, C#, & Python

Can a program written using Python 3 run in Python 2?

No

Is Python case sensitive?

Yes

What are the two modes you can run Python in?

You can run Python in script mode or interactive mode. Running a Python program from a script file is known as running Python in script mode. Typing a statement at the >>> prompt and executing it is called running Python in interactive mode.

Pseudocode

___ is the code in natural language mixed with some program code.

Logic

_______ error does not cause the program to abort, but produces incorrect results.

String

a programming term meaning a sequence of characters

Pseudocode

describes algorithms using natural language mixed with code.

Algorithm

describes how a problem is solved by listing the actions that need to be taken and the order of their executions.

Syntax Error

If you forget to put a closing quotation mark on a string, what kind error will be raised?

Can a program written in Python 2 run in Python 3?

No. Python 3 is a newer version, but it is not backward-compatible with Python 2.

Python is interpreted. What does that mean?

Python is interpreted, which means that python code is translated and executed by an interpreter one statement at a time. In a compiled language, the entire source code is compiled and then executed altogether.

interpreter/at runtime

In Python, a syntax error is detected by the ________ at _______

IDLE

is Interactive DeveLopment Environment for developing and running Python code.

Line comment

is a text preceded by a pound sign (#) on a line.

#

A Python line comment begins with ___

Logic Error

Suppose you write a program for computing the perimeter of a rectangle and you mistakenly write your program so that it computes the area of a rectangle. What kind of error is this?

What is the Python source filename extension by convention?

The Python source code filename extension is .py.

Data Type

is the type of the value stored in a variable.

Script Mode

is to run a Python program from a script file.

Logic Error

occurs when a program does not perform its intended task.

What is the statement to display the message "Hello world" to the console?

print("Hello World")

To start Python from the command prompt, use the command ____

python

To run python script file named t.py, use the command _____

python t.py

Variable

represents a value stored in the computer's memory.

Runtime Error

causes a program to terminate abnormally.

Syntax Error

is detected by the interpreter.

Interactive Mode

is to type a statement at the >>> prompt and to execute it.