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question:Write a python function to calculate the total cost of items purchased, given a list of item prices and a sales tax rate. The function should take a list of floats as the first input, representing the prices of items, and a float as the second input, representing the sales tax rate as a percentage. The function should return a float that represents the total cost, including sales tax.Input:- A list of floats representing item prices, e.g., `[19.99, 34.50, 75.00]`- A float representing the sales tax rate, e.g., `7.5`Output:- A float representing the total cost including sales tax, e.g., `138.7475` for the example inputs.Example:```pythondef calculate_total_cost(prices, tax_rate): pass# Example usage:prices = [19.99, 34.50, 75.00]tax_rate = 7.5print(calculate_total_cost(prices, tax_rate)) # Should output: 138.7475```
answer:Here's the Python function to calculate the total cost of items purchased, including sales tax:```pythondef calculate_total_cost(prices, tax_rate): total_cost = sum(prices) sales_tax = total_cost * (tax_rate / 100) return total_cost + sales_tax```This function takes two arguments:- `prices`: a list of floats representing the prices of items- `tax_rate`: a float representing the sales tax rate as a percentageThe function first calculates the total cost of all items by summing up the prices in the `prices` list using the `sum()` function. Then, it calculates the sales tax by multiplying the total cost with the tax rate (converted to a decimal by dividing by 100). Finally, it returns the sum of the total cost and the sales tax.
question:Write a python function to calculate the total donation amount an anonymous donor has made over a series of contributions, given a list of individual donations. Each donation is represented as a float in a list, and the function should return the sum of all donations as a float. Ensure the function can handle an empty list, returning 0.0 in that case.Input: A list of floats representing donation amounts. For example, `[50.0, 75.25, 100.0]`.Output: A single float representing the total donation amount.Example:```pythondonations = [50.0, 75.25, 100.0]print(calculate_total_donations(donations)) # Output should be 225.25```In the example above, the function should compute the total of the donations and return `225.25`.
answer:def calculate_total_donations(donations): total = 0.0 for donation in donations: total += donation return total
question:Write a python function to simulate a simple magical effect by transforming a list of integers. The function should take a list of integers as input and return a new list where each integer is transformed according to the following magical rules:1. If the integer is even, double it.2. If the integer is odd, triple it and then add one.For example, given the input list `[1, 2, 3, 4]`, the expected output would be `[4, 4, 10, 8]` because:- `1` is odd, so (1 * 3) + 1 = 4- `2` is even, so 2 * 2 = 4- `3` is odd, so (3 * 3) + 1 = 10- `4` is even, so 4 * 2 = 8Please provide a Python function that accomplishes this task.
answer:def transform_integers(lst): transformed_list = [] for num in lst: if num % 2 == 0: transformed_list.append(num * 2) else: transformed_list.append(num * 3 + 1) return transformed_list
question:Write a python function to reverse a given string but keep the positions of all spaces intact. As an aspiring actress who looks up to the legends of Polish cinema, I find inspiration in their timeless performances and want to create something that pays homage to their legacy by preserving the elegance of their words, even when reversed.Input: A single string containing letters and spaces.Output: A new string with the letters reversed, but the spaces remain in their original positions.Example:- Input: "I love acting"- Output: "g nitca evo lI"Thank you to the wonderful community for any assistance you can provide!
answer:def reverse_string_with_spaces(string): # Split the string into words and spaces words = string.split() # Reverse each word reversed_words = [''.join(reversed(word)) for word in words] # Join the reversed words with spaces reversed_string = ' '.join(reversed_words) return reversed_string
question:Write a python function to reverse the words in a given sentence while maintaining the original order of the words. The input will be a string containing multiple words separated by spaces. The expected output is a string where each word is reversed, but the order of the words remains the same.For example:Input: "Hello World from Bowmans"Output: "olleH dlroW morf snamwoB"Note: Ensure that the function handles punctuation correctly and maintains the original spacing between words.
answer:def reverse_words(sentence): words = sentence.split() reversed_words = [] for word in words: reversed_word = ''.join(reversed(word)) reversed_words.append(reversed_word) reversed_sentence = ' '.join(reversed_words) return reversed_sentence
question:Write a python function to generate a unique identifier for helmet designs. Each identifier should be a combination of the material, color, and a sequential number. Materials and colors are provided as lists, and the sequence starts from 1 for each unique material-color combination. The function should take two lists as input: `materials` and `colors`. It should output a list of strings, where each string is of the format "Material-Color-SequenceNumber".For example, given the following input:```pythonmaterials = ["Carbon", "Kevlar"]colors = ["Red", "Blue"]```The expected output should be:```python[ "Carbon-Red-1", "Carbon-Blue-1", "Kevlar-Red-1", "Kevlar-Blue-1"]```Note that each material-color pair starts its sequence from 1. The function should handle cases where the input lists are empty and return an empty list in such cases. Please ensure that the function can handle any reasonable number of materials and colors.
answer:def generate_helmet_identifiers(materials, colors): identifiers = [] sequence_number = {} for material in materials: for color in colors: key = f"{material}-{color}" if key not in sequence_number: sequence_number[key] = 1 else: sequence_number[key] += 1 identifier = f"{material}-{color}-{sequence_number[key]}" identifiers.append(identifier) return identifiers