1.A function is a block of code which only runs when it is called. 2.You can pass data, known as parameters, into a function. 3.A function can return data as a result.

Repeats code. 1.For loops (counting through items) 2. While loops (based on conditions). 3. Nested Loops

Sequence of characters, surrounded by either single quotation marks, or double quotation marks. eg 'hello' "hello"

File with Python code. A module can define functions, classes, and variables write the desired code and save that in a file with .py extension

Anonymous function can take any number of arguments, but can only have one expression.

Part of a sequence you can specify where to start the slicing, and where to end.

Sequence of numbers The range() function returns a sequence of numbers, starting from 0 by default, and increments by 1. range (start, stop, step )

Sets are used to store multiple items in a single variable. Set items are unordered, unchangeable, and do not allow duplicate values. thisset = {"apple", "banana", "cherry", "apple"}

Loop with condition while condition: # body of while loop

Iterate over items for i in range(4): print(i)

1.1 How to run python in command line?

Step 1: Open your terminal or command prompt. Step 2: Type python followed by script_ name.py Eg: Python first.py or py first.py

1.1 Describe reserved words

· Keywords are reserved words · That have special meaning · That cannot be used as identifiers · Eg: If,else,del,break,false,for,break,from

1.1 What does len() do? ·

The len() function is used to find out how many items are in an object · It can works with a variety of data types (strings, lists, tuples, dictionaries, sets,etc…) · It return an integer representing the number of elements · Eg: s = "Hello" print(len(s)) # Output: 5

Explain arithmetic operators in Python

Arithmetic operators in Python are used to perform mathematical operations on numeric values Addition (+): Adds two numbers. 5+2 à7 · Subtraction (-): Subtracts one number from another. 5-2 à 3 · Multiplication (*): Multiplies two numbers. 5*2 à 10 · Division (/): Divides one number by another, result is a float. 5/2 ->2.5 · Floor Division (//): Divides one number by another, result is an integer. 5//2 à 2 · Modulus (%): Finds the remainder of the division of two numbers. 5%2 à 1 · Exponentiation (**): Raises one number to the power of another. 5**2 à 25

What is append() method? Explain. ·

The append() method adds a single element to the end of a list. · Syntax: list.append(element) Eg: my_list = [1, 2, 3] my_list.append(4) print(my_list) # Output: [1, 2, 3, 4]

What is extend() method? Explain.

· The extend() method adds all elements of an iterable (e.g., another list, tuple, string) to the end of the list. Eg: my_list = [1, 2, 3] my_list.extend([4, 5, 6]) print(my_list) # Output: [1, 2, 3, 4, 5, 6]

How to slice list in python?

· Slicing a list in Python allows you to extract a portion of the list · list[start:stop:step] my_list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] # Slice from index 2 to index 5 newlist= my_list[2:5] print(newlist) # Output: [2, 3, 4] # Slice from the beginning to index 5 newlist = my_list[:5] print(newlist) # Output: [0, 1, 2, 3, 4] # Slice from index 5 to the end newlist = my_list[5:] print(newlist) # Output: [5, 6, 7, 8, 9] # Slice the entire list newlist = my_list[:] print(newlist) # Output: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] # Slice every second element from index 1 to 8 newlist = my_list[1:8:2] print(newlist) # Output: [1, 3, 5, 7] # Slice the last three elements newlist = my_list[-3:] print(newlist) # Output: [7, 8, 9]

Explain Break statements in python 

When the break statement is executed, the loop is immediately terminated.  Control is passed to the first statement following the loop.  Break statement will end up in the innermost loop if it is used within a nested loop.

Explain Continue statements in python

 When the continue statement is executed, the rest of the code inside the current iteration is skipped.  The loop proceeds with the next iteration.

. Explain scope of a variables

Scope defines where a variable can be accessed. Scope determine the visibility and accessibility of variables.  Local Scope: Inside a function.  Global Scope: Outside all functions, accessible everywhere

Explain life time of a variables

Lifetime defines how long a variable exists in memory.  Local Variables: Exist during the function execution.  Global Variables: Exist for the entire program duration

. What are modules in python 

Modules are files that contain Python code.  They can define functions, classes, and variables, and they can include runnable code.  A module allows you to organize your code into separate files and reuse it across different programs.  A module is simply a .py file.  You can import the contents of one module into another using the import statement

. 4 What are packages in python

 A package is a directory containing multiple modules.  The init .py file signals to Python that the directory should be treated as a package.  Packages can be nested to create sub-packages

Python Basics for Grade 12 Flashcards

Student preview

36 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Python

Back

High-level programming language

2.

FLASHCARD QUESTION

Front

Syntax

Back

Rules for writing code

3.

FLASHCARD QUESTION

Front

Variable

Back

Stores data value

a=8

a is the variable store the value 8.

4.

FLASHCARD QUESTION

Front

Data Type

Back

Type of data

Eg- String,int,float,tuple,list,set...

5.

FLASHCARD QUESTION

Front

List

Back

Ordered collection of items

2. Lists are mutable(can be modified).

3.Lists consume more memory

4.

Lists have several built-in methods.

6.

FLASHCARD QUESTION

Front

Tuple

Back

1.Tuples are immutable(cannot be modified).

2.Tuples consumes less memory

3.Tuples have fewer built-in methods.

7.

FLASHCARD QUESTION

Front

Dictionary

Back

1.used to store data values in key:value pairs.

2.written with curly brackets

3.Dictionary items are ordered, changeable, and do not allow duplicates.

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