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• Python Program to print pattern of letter W

Hello everyone! Welcome back to programminginpython.com . I am continuing with this pattern programming series, here I will tell you how to print the pattern of the letter W. In the previous tutorials , I have shown you the patterns of letters A to V . Here it’s now time for Pattern W. You can check the complete series on letter patterns here.

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Print Pattern W – Code Visualization

Python program to print the pattern of letter W

• Read an input integer for asking the size of the letter using input()
• if yes, call the function print_pattern()
• else, show a message to enter a number that is greater or equal to 8
• here we only do two things, print star( * ) and print space( ), just writing conditions so the pattern of * ‘s and ‘s will display the pattern U
• following are 4 conditions for printing *’s We have 2 loops, an outer loop() for rows, and an inner loop for columns.
• column == 0
• column == n-1
• row == column and row >= n//2
• row+column == n-1 and row >= n//2
• print `  ` in remaining all cases.

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Also make sure you look at all the other letter patterns below:

• Python Program to print pattern of letter Z
• Python Program to print pattern of letter Y
• Python Program to print pattern of letter X
• Python Program to print pattern of letter V
• Python Program to print pattern of letter U
• Python Program to print pattern of letter T
• Python Program to print pattern of letter S
• Python Program to print pattern of letter R
• Python Program to print pattern of letter Q
• Python Program to print pattern of letter P
• Python Program to print pattern of letter O
• Python Program to print pattern of letter N
• Python Program to print pattern of letter M
• Python Program to print pattern of letter L
• Python Program to print pattern of letter K
• Python Program to print pattern of letter J
• Python Program to print pattern of letter I
• Python Program to print pattern of letter H
• Python Program to print pattern of letter G

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A RegEx, or Regular Expression, is a sequence of characters that forms a search pattern.

RegEx can be used to check if a string contains the specified search pattern.

RegEx Module

Python has a built-in package called re , which can be used to work with Regular Expressions.

Import the re module:

RegEx in Python

When you have imported the re module, you can start using regular expressions:

Search the string to see if it starts with "The" and ends with "Spain":

RegEx Functions

The re module offers a set of functions that allows us to search a string for a match:

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Metacharacters

Metacharacters are characters with a special meaning:

Special Sequences

A special sequence is a \ followed by one of the characters in the list below, and has a special meaning:

A set is a set of characters inside a pair of square brackets [] with a special meaning:

The findall() Function

The findall() function returns a list containing all matches.

Print a list of all matches:

The list contains the matches in the order they are found.

If no matches are found, an empty list is returned:

Return an empty list if no match was found:

The search() Function

The search() function searches the string for a match, and returns a Match object if there is a match.

If there is more than one match, only the first occurrence of the match will be returned:

Search for the first white-space character in the string:

If no matches are found, the value None is returned:

Make a search that returns no match:

The split() Function

The split() function returns a list where the string has been split at each match:

Split at each white-space character:

You can control the number of occurrences by specifying the maxsplit parameter:

Split the string only at the first occurrence:

The sub() Function

The sub() function replaces the matches with the text of your choice:

Replace every white-space character with the number 9:

You can control the number of replacements by specifying the count parameter:

Replace the first 2 occurrences:

Match Object

A Match Object is an object containing information about the search and the result.

Note: If there is no match, the value None will be returned, instead of the Match Object.

Do a search that will return a Match Object:

The Match object has properties and methods used to retrieve information about the search, and the result:

.span() returns a tuple containing the start-, and end positions of the match. .string returns the string passed into the function .group() returns the part of the string where there was a match

Print the position (start- and end-position) of the first match occurrence.

The regular expression looks for any words that starts with an upper case "S":

Print the string passed into the function:

Print the part of the string where there was a match.

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Alphabet Pattern Programs in Python

Patterns are a valuable exercise for enhancing logical thinking and coding skills. Using loops in Python, we can create diverse alphabetical patterns like stars, squares, pyramids, and triangles. In this discussion, we'll explore Python programs for printing these patterns using simple iteration and for loops. Before printing Python patterns, know ASCII: each alphabet corresponds to an ASCII value (e.g., A is 65). Uppercase (A-Z) values range from 65 to 90, and lowercase (a-z) from 97 to 122. Use `chr()` to print an alphabet via its ASCII value, like 'A' with ASCII 65.

What is an Alphabet Pattern?

An Alphabetic pattern is a visual arrangement of alphabets, whether uppercase or lowercase, presented in an aesthetically pleasing manner. These patterns can take on various predefined shapes such as squares, triangles, or even stars. Moreover, the customization of these patterns extends to choosing how they are filled.

Print Alphabet Pattern Programs in Python

Below are the Alphabet pattern programs in Python which we can print in Python .

Table of Content

• Left Triangle Alphabet Pattern
• Right Triangle Alphabet Pattern
• Hollow Triangle Alphabet Pattern
• Pyramid Alphabet Pattern
• Upside Down Pyramid Alphabet Pattern
• Hollow Pyramid Alphabet Pattern
• Diamond Alphabet Pattern
• Hourglass Alphabet Pattern
• Square Alphabet Pattern
• Heart Alphabet Pattern
• Right Pascal Alphabet Pattern
• Left Pascal Alphabet Pattern

Left Triangle Alphabet Pattern in Python

In this example, below Python code creates a function, `left_triangle_pattern`, to print a left-angled triangle of uppercase letters based on the specified number of rows. After defining the function, it sets the row count to 7 and calls the function to generate the desired pattern.

Space Complexity: O(1) Time Complexity: O(n^2)

Right Triangle Alphabet Pattern in Python

In this example, below The Python code defines the function `right_triangle_pattern` to print a right-angled triangle of uppercase letters. It uses nested loops to manage line breaks, leading spaces, and character printing. The code sets the row count to 7 and calls the function to generate the pattern.

Space Complexity : O(1) Time Complexity: O(n^2)

Hollow Triangle Alphabet Pattern in Python

In this example, below given Python code defines a function `hollow_left_triangle` to print a hollow left-angled triangle pattern of uppercase letters. It uses nested loops, with the outer loop managing lines and the inner loop controlling character printing, including spaces for the hollow effect. The code sets the number of rows to 7 .

Space Complexity: O(1) Time Complexity : O(n^2)

Pyramid Alphabet Pattern in Python

In this example, below Python code defines a function `pyramid_pattern` to print a pyramid pattern of uppercase letters. It utilizes nested loops, with the first loop managing spaces before each line, and the second loop controlling the printing of an odd number of characters. The code then sets the number of rows to 7.

Upside Down Pyramid Alphabet Pattern in Python

In this example, below Python code defines a function `reverse_pyramid` to print a reversed pyramid pattern of uppercase letters. It uses nested loops, with the first loop managing spaces before each line, and the second loop controlling the printing of an odd number of characters. The code then sets the number of rows to 7 .

Hollow Pyramid Alphabet Pattern in Python

In this example , below Python code defines a function `hollow_pyramid` to print a hollow pyramid pattern of uppercase letters. It uses nested loops, with the first loop managing spaces before each line, and the second loop controlling the printing of characters. The function includes conditions to print characters only at the start and end of each row, as well as in the last row for the hollow effect.

Diamond Alphabet Pattern in Python

In this example, below Python code defines a function `print_diamond` to print either an upright or a reversed diamond pattern of uppercase letters, based on the `is_upright` parameter. It uses nested loops, with the first loop managing spaces before each line, and the second loop controlling the printing of characters. The code sets the number of rows to 7 and calls the function twice.

Hourglass Alphabet Pattern in Python

In this example, below Python code defines a function `print_hourglass` to print an hourglass pattern of uppercase letters. It combines a reversed pyramid pattern and an upright pyramid pattern. The function uses nested loops to manage spaces and character printing for both the upper and lower halves of the hourglass.

Square Alphabet Pattern in Python

In this example , below Python code defines a function `print_square_pattern` to print a square pattern of uppercase letters. It uses nested loops, with the outer loop managing rows and the inner loop controlling the printing of characters.

Heart Alphabet Pattern in Python

In this example, below Python code defines a function `print_heart_pattern` to print a heart-shaped pattern of uppercase letters. It consists of an upper part and a lower part. The upper part prints characters and spaces in a specific pattern, and the lower part prints characters in a descending order. The code sets the size of the heart based on the rows .

Right Pascal Alphabet Pattern in Python

In this example, Below Python function `right_pascal_triangle` generates a right-angled Pascal's Triangle pattern using uppercase letters. It consists of ascending and descending parts, printing spaces and characters in a specific pattern. The code sets the row count to 7 and calls the function to produce the pattern.

Left Pascal Alphabet Pattern in Python

In this example, below Python code defines a function `left_pascal` to print a left-angled Pascal's Triangle pattern using uppercase letters. It consists of an ascending part and a descending part, with each part printing characters in a specific pattern. The code sets the number of rows to 7 and calls the function to generate the left-angled Pascal's Triangle pattern.

In conclusion, exploring alphabet pattern programs in Python has provided a comprehensive insight into the versatility and creative potential of the language. From simple triangular patterns to intricate shapes, these programs serve as a practical and engaging way to enhance one's understanding of Python's loop structures and string manipulation capabilities. The ability to customize patterns by adjusting rows, columns, and repetition adds an extra layer of complexity, allowing learners to sharpen their programming skills.

Related Article: Programs for Printing Pyramid

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Pyramid Pattern in Python

In this tutorial, we will look at 12 different pyramid pattern in Python programming language. We will also look at the code for each pattern.

Pyramid patterns are very famous in programming interviews. So, it is very important to know how to print patterns in Python. Let's look at 12 different pyramid patterns using stars, numbers, and alphabets.

Prerequisites

• Python for loop
• While In Python
• If Else In Python

Table Of Contents

• Star Pyramid Pattern
• Hollow Star Pyramid Pattern
• Reverse Star Pyramid Pattern
• Hollow Reverse Star Pyramid Pattern
• Number Pyramid Pattern
• Hollow Number Pyramid Pattern
• Reverse Number Pyramid Pattern
• Hollow Reverse Number Pyramid Pattern
• Alphabet Pyramid Pattern
• Hollow Alphabet Pyramid Pattern
• Reverse Alphabet Pyramid Pattern
• Hollow Reverse Alphabet Pyramid Pattern

1. Star Pyramid Pattern in Python

You can look at the pyramid pattern of stars above. Geometrically it looks like an equilateral triangle.

The steps to create this pattern are as follows:

• Take input from the user for the size of the pyramid.
• Create an external loop that will run from 0 to size .
• Inside external loop creates 2 internal loops. One for printing spaces and another for printing stars.
• Inside the first internal loop, print size - i - 1 space. Here i is the variable of the external loop.
• Inside the second internal loop, print 2 * i + 1 stars.
• Print a new line at the end of both internal loops.

2. Hollow Star Pyramid Pattern in Python

By the name you can understand that this pyramid has no internal parts. It is hollow from the inside. Stars are only printed at the edges.

This is a bit more complex pattern than the previous one. So, let's look at the steps to create this pattern:

• First, take the size input.
• The external loop will run from 0 to size .
• The first internal loop prints the space before the edge stars. That is from 0 to size - i - 1 . Where i is the current row number.
• The main trick is at the second internal loop. Here we print stars only at the first and last position of the pyramid. That is at k == 0 and k == 2 * i . If the current row is the last row then print a star at every position.

3. Reverse Star Pyramid Pattern in Python

A reverse pyramid is the same as a pyramid pattern but it's upside down. So, the steps to create this pattern are the same as the previous one. The only difference is that we will print the stars in reverse order.

Inside the external loop, print spaces start from 0 and increase by 1 in each iteration. and print star for 2 * (size - i - 1) + 1 times.

4. Hollow Reverse Star Pyramid Pattern in Python

The hollow reverse star pyramid is the same as the reverse pyramid but hollow inside.

The only difference in the code comes when you start printing stars. Print stars only at the boundary of the pyramid. That is at k == 0 and k == 2 * (size - i - 1) . If the current row is the first row then print a star at every position.

5. Number Pyramid Pattern in Python

The number pyramid is the same as the pyramid pattern but instead of stars, we will print numbers.

6. Hollow Number Pyramid Pattern in Python

Here is the Python program for the hollow number pyramid pattern .

7. Reverse Number Pyramid Pattern in Python

Here is the Python program for reverse number pyramid .

8. Hollow Reverse Number Pyramid Pattern in Python

Here is the Python program for the hollow reverse number pyramid .

9. Alphabet Pyramid Pattern in Python

Here is the Python program for the alphabet pyramid .

10. Hollow Alphabet Pyramid Pattern in Python

Here is the Python program for the hollow alphabet pyramid .

11. Reverse Alphabet Pyramid Pattern in Python

Here is the Python program for the reverse alphabet pyramid .

12. Hollow Reverse Alphabet Pyramid Pattern in Python

Here is the Python program for the hollow reverse alphabet pyramid .

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Create a method named check_angles. The sum of a triangle's three angles should return True if the sum is equal to 180, and False otherwise. The method should print whether the angles belong to a triangle or not.

11.1  Write methods to verify if the triangle is an acute triangle or obtuse triangle.

11.2  Create an instance of the triangle class and call all the defined methods.

11.3  Create three child classes of triangle class - isosceles_triangle, right_triangle and equilateral_triangle.

11.4  Define methods which check for their properties.

Create an empty dictionary called Car_0 . Then fill the dictionary with Keys : color , speed , X_position and Y_position.

car_0 = {'x_position': 10, 'y_position': 72, 'speed': 'medium'} .

a) If the speed is slow the coordinates of the X_pos get incremented by 2.

b) If the speed is Medium the coordinates of the X_pos gets incremented by 9

c) Now if the speed is Fast the coordinates of the X_pos gets incremented by 22.

Print the modified dictionary.

Create a simple Card game in which there are 8 cards which are randomly chosen from a deck. The first card is shown face up. The game asks the player to predict whether the next card in the selection will have a higher or lower value than the currently showing card.

For example, say the card that’s shown is a 3. The player chooses “higher,” and the next card is shown. If that card has a higher value, the player is correct. In this example, if the player had chosen “lower,” they would have been incorrect. If the player guesses correctly, they get 20 points. If they choose incorrectly, they lose 15 points. If the next card to be turned over has the same value as the previous card, the player is incorrect.

Consider an ongoing test cricket series. Following are the names of the players and their scores in the test1 and 2.

Test Match 1 :

Dhoni : 56 , Balaji : 94

Test Match 2 :

Balaji : 80 , Dravid : 105

Calculate the highest number of runs scored by an individual cricketer in both of the matches. Create a python function Max_Score (M) that reads a dictionary M that recognizes the player with the highest total score. This function will return ( Top player , Total Score ) . You can consider the Top player as String who is the highest scorer and Top score as Integer .

Input : Max_Score({‘test1’:{‘Dhoni’:56, ‘Balaji : 85}, ‘test2’:{‘Dhoni’ 87, ‘Balaji’’:200}}) Output : (‘Balaji ‘ , 200)

Write a Python program to demonstrate Polymorphism.

1. Class  Vehicle  with a parameterized function  Fare,  that takes input value as fare and

returns it to calling Objects.

2. Create five separate variables  Bus, Car, Train, Truck and Ship  that call the  Fare

3. Use a third variable  TotalFare  to store the sum of fare for each Vehicle Type. 4. Print the  TotalFare.

Write a Python program to demonstrate multiple inheritance.

1.  Employee  class has 3 data members  EmployeeID ,  Gender  (String) , Salary  and

PerformanceRating ( Out of 5 )  of type int. It has a get() function to get these details from

2.  JoiningDetail  class has a data member  DateOfJoining  of type  Date  and a function

getDoJ  to get the Date of joining of employees.

3.  Information  Class uses the marks from  Employee  class and the  DateOfJoining  date

from the  JoiningDetail  class to calculate the top 3 Employees based on their Ratings and then Display, using  readData , all the details on these employees in Ascending order of their Date Of Joining.

You are given an array of numbers as input: [10,20,10,40,50,45,30,70,5,20,45] and a target value: 50. You are required to find pairs of elements (indices of two numbers) from the given array whose sum equals a specific target number. Your solution should not use the same element twice, thus it must be a single solution for each input

1.1 Write a Python class that defines a function to find pairs which takes 2 parameters (input array and target value) and returns a list of pairs whose sum is equal to target given above. You are required to print the list of pairs and state how many pairs if found. Your solution should call the function to find pairs, then return a list of pairs.

1.2 Given the input array nums in 1.1 above. Write a second program to find a set of good pairs from that input array nums. Here a pair (i,j) is said to be a good pair if nums[i] is the same as nums[j] and i < j. You are required to display an array of good pairs indices and the number of good pairs.

How to find largest number inn list in python

Given a list of integers, write a program to print the sum of all prime numbers in the list of integers.

Note: one is neither prime nor composite number

Using the pass statement

how to get a input here ! example ! 2 4 5 6 7 8 2 4 5 2 3 8 how to get it?

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