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1. Top results related to patterns in python

   • patterns in python-complex

     Top Answer

     Answered Sep 01, 2014 · 0 votes

     You can use the following code:

     def upanddown(n): return range(1, n) + range(n, 0, -1)-def triangle(rows): for num in xrange(1, rows + 1): print ' '.join(map(str, upanddown(num))).center(rows * 4 - 3)rows = input("Number of rows: ")triangle(rows)

     Output:

     Number of rows: 4 1 1 2 1 1 2 3 2 1 1 2 3 4 3 2 1

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     1/5

   • Python - Substituting patterns in text using regex

     Regular Expression (regex) is meant for pulling out the required information from any text which is based on patterns. They are also widely used for manipulating the pattern-based texts which leads to text preprocessing and are very helpful in implementing digital skills like Natural Language Processing(NLP).

     This article demonstrates how to use regex to substitute patterns by providing multiple examples where each example is a unique scenario in its own. It is very necessary to understand the re.sub() method of re (regular expression) module to understand the given solutions.

     The re.sub() method performs global search and global replace on the given string. It is used for substituting a specific pattern in the string. There are in total 5 arguments of this function.

     Syntax: re.sub(pattern, repl, string, count=0, flags=0)

     Parameters: pattern – the pattern which is to be searched and substituted repl – the string with which the pattern is to be replaced string – the name of the variable in which the pattern is stored count – number of characters up to which substitution will be performed flags – it is used to modify...

     Check all answers on Geeksforgeeks

     2/5

   • Python - Substituting patterns in text using regex

     Regular Expression (regex) is meant for pulling out the required information from any text which is based on patterns. They are also widely used for manipulating the pattern-based texts which leads to text preprocessing and are very helpful in implementing digital skills like Natural Language Processing(NLP).

     This article demonstrates how to use regex to substitute patterns by providing multiple examples where each example is a unique scenario in its own. It is very necessary to understand the re.sub() method of re (regular expression) module to understand the given solutions.

     The re.sub() method performs global search and global replace on the given string. It is used for substituting a specific pattern in the string. There are in total 5 arguments of this function.

     Syntax: re.sub(pattern, repl, string, count=0, flags=0)

     Parameters: pattern – the pattern which is to be searched and substituted repl – the string with which the pattern is to be replaced string – the name of the variable in which the pattern is stored count – number of characters up to which substitution will be performed flags – it is used to modify...

     Check all answers on Geeksforgeeks

     3/5

   • Python replace, using patterns in array

     Top Answer

     Answered Apr 14, 2014 · 3 votes

     Use a regular expression that wraps your source text with some whitespace look-behind and a \b anchor; make sure to include the start of the string too:

     import re-for pattern, replacement in zip(array[1:], rep_array[1:]): pattern = r'{}\b'.format(re.escape(pattern)) string = re.sub(pattern, replacement, string)

     This uses re.escape() to ensure any regular expression meta characters in the pattern are escaped first. zip() is used to pair up your patterns and replacement values; a more pythonic alternative to your range() loop.

     \b only matches at a position where a word character is followed by a non-word character (or vice versa), a word boundary. Your patterns all end in a word character, so this makes sure your patterns only match if the next character is not a word character, blocking $x from matching inside $xena.

     Demo:

     >>> import re>>> array = [3, "$x" , "$y", "$hi_buddy"]>>> rep_array = [3, "A", "B", "C"]>>> string = "$xena is here $x and $y. foo$x matches too!">>> for pattern, replacement in zip(array[1:], rep_array[1:]):... pattern = r'{}\b'.format(re.escape(pattern))... string = re.sub(pattern, replacement, string)... >>> print string$xena is here A and B. fooA matches too!

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     4/5

   • Also try

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     design patterns in python	patterns in python programming
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2. www.tutorialstonight.com › python › pattern-programPattern Program in Python (with 30 Examples) - Tutorials Tonight

   www.tutorialstonight.com › python › pattern-program

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   Learn how to create and print various patterns in Python using stars, numbers, alphabets and more. See 30 examples of different pattern programs with code and output.

3. pynative.com › print-pattern-python-examplePython Programs to Print Pattern – Print Number, Pyramid ...

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   Feb 24, 2024 · Learn how to print various patterns in Python using for loop, while loop, and range() function. See over 35+ examples of number, pyramid, star, triangle, diamond, and alphabets patterns.

4. www.geeksforgeeks.org › programs-printing-pyramidPrograms for printing pyramid patterns in Python

   www.geeksforgeeks.org › programs-printing-pyramid

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   Mar 11, 2024 · Learn how to create various pyramid patterns in Python using loops, recursion, and alphabets. See examples of full, inverted, hollow, and half pyramids with numbers and stars.

5. People also ask

   How many pattern programs are there in Python?

   • In this article, you will look at 30 different pattern program in Python. Star pattern is a common pattern program created in any programming language. It is a pattern that consists of a series of stars that create some sort of shape. In the image below you can see some of the star patterns.

   Pattern Program in Python (with 30 Examples) - Tutorials Tonight

   www.tutorialstonight.com/python/pattern-program-in-python

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   How to print a pattern in Python?

   • To understand this example, you should have the knowledge of the following Python programming topics: for i in range(rows): for j in range(i+1): print("* ", end="") print() In the above program, let's see how the pattern is printed. First, we get the height of the pyramid rows from the user.

   Python Program to Create Pyramid Patterns

   www.programiz.com/python-programming/examples/pyramid-patterns

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   What is pattern programming in Python?

   • Python, being a versatile and popular programming language, provides various ways to create intricate patterns effortlessly. In this article, we will explore 20 of the most important pattern programs in Python, each designed to help you improve your coding skills. Why Learn Pattern Programming?

   Learn 25+ Important Pattern Programs in Python - PySeek

   pyseek.com/2022/02/learn-25-important-pattern-programs-in-python/

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   Why should you create a pattern program in Python?

   • Building Confidence: Successfully creating patterns can boost your confidence in your coding skills. Now, let’s explore some essential pattern programs in Python: 1.

   Learn 25+ Important Pattern Programs in Python - PySeek

   pyseek.com/2022/02/learn-25-important-pattern-programs-in-python/

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6. python-patterns.guidePython Design Patterns

   python-patterns.guide

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   Learn how to apply design patterns in Python, with examples, explanations and references. Explore the Gang of Four patterns, Python-specific patterns and more.

7. www.programiz.com › python-programming › examplesPython Program to Create Pyramid Patterns

   www.programiz.com › python-programming › examples

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   Learn how to print different types of pyramids using Python loops and conditional statements. See examples of half pyramids, full pyramids, inverted pyramids, Pascal's triangle and Floyd's triangle.

8. pyseek.com › 2022 › 02Learn 25+ Important Pattern Programs in Python - PySeek

   pyseek.com › 2022 › 02

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   Feb 14, 2022 · Explore 20 of the most important pattern programs in Python, each designed to help you improve your coding skills. Learn how to create square, triangle, pyramid, diamond, number, and other patterns with logic and creativity.

9. refactoring.guru › design-patterns › pythonDesign Patterns in Python

   refactoring.guru › design-patterns › python

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   Learn how to apply design patterns in Python with code examples and articles. Explore creational, structural, and behavioral patterns and their usage in Python.