Python module 1

Question 1

Name four simplace actions to form a program:

Answer 1

Accept a number representing distance
Accept a number representing travel time
Divide the former value by the later and store the result in memory
Display the result (representing average speed) in a readable format

Question 2

Machine Language is ____

Answer 2

Rudimentary

Question 3

Instruction List

Answer 3

Sometimes Abbreviated IL. Different types of computers may vary depending of their ILs

Question 4

Each Language (machine or natural) consists of the following elements:

Answer 4

An Alphabet
A Lexis
A syntax
Semantics

Question 5

Alphabet

Answer 5

A set of symbols used to build words of a certain language (e.g., the Latin alphabet for English, the Cyrillic alphabet for Russian, Kanji for Japanese and so on)

Question 6

Lexis

Answer 6

(aka a dictionary) a set of words the language offers its users (e.g., the word “computer” comes from the English language dictionary, while “cmoptrue” doesn’t; the word “chat” is present both in English and French Dictionaries, but their meanings are different)

Question 7

Syntax

Answer 7

A set of rules (formal or informal, written or felt intuitively) used to determine if a certain string of words forms a valid sentence (e.g., “I am a python” is a syntactically correct phrase, while “I a python am” Isn’t)

Question 8

Semantics

Answer 8

a set of rules determining if a certain phrase makes sense (e.g., “I ate a doughnut” makes sense, but “A doughnut ate me” doesn’t.

Question 9

The IL is

Answer 9

The alphabet of a machine language

Question 10

A program written in a high-level programming language is called

Answer 10

a source

Question 11

Source file

Answer 11

the file containing the source code

Question 12

The two ways of transforming a program from a high-level programming language into machine language:

Answer 12

Compilation
Interpretation

Question 13

Compilation

Answer 13

The source program is translated one (however, this act must be repeated each time you modify the source code) by getting a file (e.g., an .exe file if the code is intended to be run under MS Windows) containing the machine code; now you can distribute the file wordwide; the program that performs this translation is called a compiler or translator;

Question 14

Interpretation

Answer 14

you (or any user of the code) can translate the source program each time it has to be run; the program performing this kind of transformation is called an interpreter, as it interprets the code every time it is intended to be executed; it also means that you cannot just distribute the source code as0is, because the end-user also needs the interpreter to execute it.

Question 15

Text file

Answer 15

a computer program consisting of text after writing a program.

Question 16

Pure text

Answer 16

without any decorations like fonts, colors, or embedded images or other media. Now you have to invoke the interpreter and let it read your source file

Question 17

If the interpreter finds an error it finishes its work immediately. The only result in this case is an___

Answer 17

Error Message

Question 18

Comiplation Advantages

Answer 18

• the execution of the translated code is usually faster;
• only the user has to have the compiler - the end-user may use the code without it;
• the translated code is stored using machine language - as it is very hard to understand it, your own inventions and programming tricks are likely to remain your secret.

Question 19

Compilation Disadvantages

Answer 19

• the compilation itself may be a very time-consuming process - you may not be able to run your code immediately after making an amendment;
• you have to have as many compilers as hardware platforms you want your code to be run on.

Question 20

Interpretation Advantages

Answer 20

• you can run the code as soon as you complete it - there are no additional phases of translation;
• the code is stored using programming language, not machine language - this means that it can be run on computers using different machine languages; you don’t compile your code separately for each different architecture.

Question 21

Interpretation Disadvantages

Answer 21

• don’t expect interpretation to ramp up your code to high speed - your code will share the computer’s power with the interpreter, so it can’t be really fast;
• both you and the end user have to have the interpreter to run your code.

Question 22

Python is

Answer 22

an interpreted language

Question 23

Programming Python requires

Answer 23

Python Interpreter

Question 24

Scripting Language

Answer 24

languages designed to be utilized in the interpretation manner

Question 25

Source programs encoded using scripting languages are called

Answer 25

Scripts

Question 26

Creator of Python

Answer 26

Guido van Rossum

Question 27

In 1999, Guide Van Rossum defined his goals for Python:

Answer 27

• An easy and intuitive language just as powerful as those of the major competitors;
• Open source, so anyone can contribute to its development
• code that is as understandable as plain English
• suitable for every day tasks, allowing for short development times.

Question 28

Python trivia

Answer 28

it is a low level program
Not used in mobile devices yet

Question 29

Two main kinds of Python

Answer 29

Python 2 – dead end development but still very much alive and in use
Python 3 – newer and more current. Still creating its own standards and habits.

Question 30

If you’re going to start a new Python project

Answer 30

you should use Python 3, and this is the version of Python that will be used during this course.

Question 31

Name all canonical or reference Pythons

Answer 31

CPython
Cython
Jython
PyPy
Rpython

Question 32

Cython

Answer 32

one of a possible number of solutions to Python’s lack of efficiency. Large and complex mathematical calculations may be easily coded in python (much easier than in “C” or any other traditional language), but the resulting code execution may be extremely time-consuming. This reconciled by running it through Cython. This is done because it translates the script into “C”

Question 33

CPython

Answer 33

PSF (Python Software Foundation) version of Python

Question 34

Jython

Answer 34

utilizes Java instead of C. It only works with Python 2 and there is currently nothing that translates in to Python 3 so far

Question 35

PyPy and RPython

Answer 35

a Python within a Python. In other words, it represents a Python environment written in Python-like language named RPython (Restricted Python). It is actually a subset of Python

Question 36

This course will focus on which deviation of Python?

Answer 36

CPython

Question 37

Editor

Answer 37

A tool that give you more help than a simple tool

Question 38

Console

Answer 38

Helps stop code forcibly when it gets out of control

Question 39

Debugger

Answer 39

A tool that will launch your code step-by-step which will allow you to inspect the code at each moment of execution

Question 40

IDLE

Answer 40

Integrated Development and Learning Environment