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A collection of utility functions for common programming tasks including input validation, array/matrix operations, string processing, and mathematical calculations.

Python Utility Functions Library

A collection of utility functions for common programming tasks including input validation, array/matrix operations, string processing, and mathematical calculations.

Overview

This library provides a set of utility functions designed to help with:

• Safe user input validation and collection
• Array and matrix manipulation
• String and character operations
• Mathematical computations
• Data structure searches

Functions Reference

Input Validation Functions

saisir_n(bi, bs)

Prompts the user to input an integer within a specified range.

• Parameters:
  • bi (int): Lower bound (inclusive)
  • bs (int): Upper bound (inclusive)
• Returns: Valid integer within the range [bi, bs]
• Usage: number = saisir_n(1, 100) # Get integer between 1 and 100

saisir_f(bi, bs)

Prompts the user to input a float within a specified range.

• Parameters:
  • bi (float): Lower bound (inclusive)
  • bs (float): Upper bound (inclusive)
• Returns: Valid float within the range [bi, bs]
• Usage: decimal = saisir_f(0.0, 10.0) # Get float between 0.0 and 10.0

saisir_ch()

Prompts the user to input a string containing only alphabetic characters.

• Returns: Valid alphabetic string (whitespace stripped)
• Usage: name = saisir_ch() # Get alphabetic string

Array Operations

remplir_t(n, t)

Fills an array with integer values from user input.

• Parameters:
  • n (int): Number of elements to fill
  • t (list): Array to fill (modified in place)

remplir_t_f(n, t)

Fills an array with float values from user input.

• Parameters:
  • n (int): Number of elements to fill
  • t (list): Array to fill (modified in place)

remplir_t_ch(n, t)

Fills an array with string values from user input.

• Parameters:
  • n (int): Number of elements to fill
  • t (list): Array to fill (modified in place)

afficher_t(n, t)

Displays array elements with their indices.

• Parameters:
  • n (int): Number of elements to display
  • t (list): Array/list to display

Matrix Operations

remplir_m(m, n)

Fills a square matrix with integer values from user input.

• Parameters:
  • m (2D array): Matrix to fill (modified in place)
  • n (int): Size of the square matrix (n x n)

remplir_m_f(m, n)

Fills a square matrix with float values from user input.

• Parameters:
  • m (2D array): Matrix to fill (modified in place)
  • n (int): Size of the square matrix (n x n)

remplir_m_ch(m, n)

Fills a square matrix with string values from user input.

• Parameters:
  • m (numpy.ndarray): Matrix to fill (modified in place)
  • n (int): Size of the square matrix (n x n)

afficher_m(m, n)

Displays a square matrix with indices.

• Parameters:
  • m (2D array): Matrix to display
  • n (int): Size of the square matrix (n x n)

Search Functions

existance_t(t, n, x)

Checks if a value exists in an array.

• Parameters:
  • t (list): Array to search in
  • n (int): Number of elements to check
  • x: Value to search for
• Returns: True if value exists, False otherwise

existance_ch(c, ch)

Checks if a character exists in a string.

• Parameters:
  • c (str): Character to search for
  • ch (str): String to search in
• Returns: True if character exists, False otherwise

existance_int(c, x)

Checks if a digit exists in an integer.

• Parameters:
  • c (int): Digit to search for
  • x (int): Integer to search in
• Returns: True if digit exists, False otherwise

Mathematical Functions

pgcd(a, b)

Calculates the Greatest Common Divisor (PGCD) using the Euclidean algorithm.

• Parameters:
  • a (int): First integer
  • b (int): Second integer
• Returns: Greatest Common Divisor of a and b

puissance(a, b)

Calculates a raised to the power of b using iterative multiplication.

• Parameters:
  • a (int/float): Base number
  • b (int): Exponent
• Returns: Result of a^b
• Note: Handles negative exponents and zero cases

sommechiffre(ch)

Calculates the sum of all digits in a string representation of a number.

• Parameters:
  • ch (str): String containing digits
• Returns: Sum of all digits

String Processing Functions

palindrom(ch)

Checks if a string is a palindrome.

• Parameters:
  • ch (str): String to check
• Returns: True if string is a palindrome, False otherwise

Usage Examples

# Input validation example
age = saisir_n(0, 150)  # Get age between 0 and 150
height = saisir_f(0.0, 3.0)  # Get height between 0.0 and 3.0 meters
name = saisir_ch()  # Get alphabetic name

# Array operations example
import numpy as np
arr = [0] * 5
remplir_t(5, arr)  # Fill array with user input
afficher_t(5, arr)  # Display the array

# Matrix operations example
matrix = np.zeros((3, 3), dtype=int)
remplir_m(matrix, 3)  # Fill 3x3 matrix
afficher_m(matrix, 3)  # Display the matrix

# Search examples
found = existance_t([1, 2, 3, 4, 5], 5, 3)  # Returns True
char_exists = existance_ch('a', "hello")  # Returns False
digit_exists = existance_int(5, 12345)  # Returns True

# Mathematical operations
gcd_result = pgcd(48, 18)  # Returns 6
power_result = puissance(2, 8)  # Returns 256
digit_sum = sommechiffre("12345")  # Returns 15

# String processing
is_palindrome = palindrom("racecar")  # Returns True

Known Issues

1. saisir_f function: Missing .strip() in the validation loop
2. Matrix functions: Use NumPy-style indexing, ensure NumPy is installed
3. Search functions: Could be optimized with early return for better performance

Requirements

• Python 3.x
• NumPy (for matrix operations)

Installation

1. Save the functions to a Python file (e.g., utils.py)
2. Install NumPy if using matrix functions: pip install numpy
3. Import the functions you need: from utils import saisir_n, afficher_t

Contributing

Feel free to submit issues and enhancement requests. When contributing:

1. Follow the existing code style
2. Add appropriate documentation
3. Test your changes thoroughly
4. Consider adding English translations for broader accessibility

Changelog for my-library

Version 0.0.1 - 2025-09-11

-First Realease