• Nov 19, 2022 •CodeCatch
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from time import sleep def delay(fn, ms, *args): sleep(ms / 1000) return fn(*args) delay(lambda x: print(x), 1000, 'later') # prints 'later' after one second
• May 31, 2023 •CodeCatch
# Function to check Armstrong number def is_armstrong_number(number): # Convert number to string to iterate over its digits num_str = str(number) # Calculate the sum of the cubes of each digit digit_sum = sum(int(digit) ** len(num_str) for digit in num_str) # Compare the sum with the original number if digit_sum == number: return True else: return False # Prompt user for a number number = int(input("Enter a number: ")) # Check if the number is an Armstrong number if is_armstrong_number(number): print(number, "is an Armstrong number.") else: print(number, "is not an Armstrong number.")
• Nov 18, 2022 •AustinLeath
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mydict = {'carl':40, 'alan':2, 'bob':1, 'danny':0} # How to sort a dict by value Python 3> sort = {key:value for key, value in sorted(mydict.items(), key=lambda kv: (kv[1], kv[0]))} print(sort) # How to sort a dict by key Python 3> sort = {key:mydict[key] for key in sorted(mydict.keys())} print(sort)
# Given a number n, print all primes smaller than or equal to n. It is also given that n is a small number. # For example, if n is 10, the output should be “2, 3, 5, 7”. If n is 20, the output should be “2, 3, 5, 7, 11, 13, 17, 19”. # Python program to print all primes smaller than or equal to # n using Sieve of Eratosthenes def SieveOfEratosthenes(n): # Create a boolean array "prime[0..n]" and initialize # all entries it as true. A value in prime[i] will # finally be false if i is Not a prime, else true. prime = [True for i in range(n + 1)] p = 2 while (p * p <= n): # If prime[p] is not changed, then it is a prime if (prime[p] == True): # Update all multiples of p for i in range(p * 2, n + 1, p): prime[i] = False p += 1 prime[0]= False prime[1]= False # Print all prime numbers for p in range(n + 1): if prime[p]: print (p) # driver program if __name__=='__main__': n = 30 print("Following are the prime numbers smaller") print("than or equal to ", n) print("than or equal to ", n) SieveOfEratosthenes(n)
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""" Currency Converter ---------------------------------------- """ import urllib.request import json def currency_converter(currency_from, currency_to, currency_input): yql_base_url = "https://query.yahooapis.com/v1/public/yql" yql_query = 'select%20*%20from%20yahoo.finance.xchange%20where%20pair' \ '%20in%20("'+currency_from+currency_to+'")' yql_query_url = yql_base_url + "?q=" + yql_query + "&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys" try: yql_response = urllib.request.urlopen(yql_query_url) try: json_string = str(yql_response.read()) json_string = json_string[2: json_string = json_string[:-1] print(json_string) yql_json = json.loads(json_string) last_rate = yql_json['query']['results']['rate']['Rate'] currency_output = currency_input * float(last_rate) return currency_output except (ValueError, KeyError, TypeError): print(yql_query_url) return "JSON format error" except IOError as e: print(str(e)) currency_input = 1 #currency codes : http://en.wikipedia.org/wiki/ISO_4217 currency_from = "USD" currency_to = "TRY" rate = currency_converter(currency_from, currency_to, currency_input) print(rate)
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def generate_pascals_triangle(num_rows): triangle = [] for row in range(num_rows): # Initialize the row with 1 current_row = [1] # Calculate the values for the current row if row > 0: previous_row = triangle[row - 1] for i in range(len(previous_row) - 1): current_row.append(previous_row[i] + previous_row[i + 1]) # Append 1 at the end of the row current_row.append(1) # Add the current row to the triangle triangle.append(current_row) return triangle def display_pascals_triangle(triangle): for row in triangle: for number in row: print(number, end=" ") print() # Prompt the user for the number of rows num_rows = int(input("Enter the number of rows for Pascal's Triangle: ")) # Generate Pascal's Triangle pascals_triangle = generate_pascals_triangle(num_rows) # Display Pascal's Triangle display_pascals_triangle(pascals_triangle)