u010969626的博客

import math def main(): print ("this program find the real solution to a quadratic") a, b, c=eval(input("please input the coefficients(a,b,c):")) delta=b*b-4*a*c if delta>=0:

import math def main(): print ("let us find the solution to a quadratic\n") a, b, c=eval(input("please input the coefficients(a,b,c):")) delta=b*b-4*a*c if a==0: x=-b/c

import random x=random.randint(1,6) y=random.choice(["apple","banana","cherry","durian"]) print(x,y)

s=input("enter an integer:") try: i=int(s) print("valid integer entered:",i) except ValueError as err: print(err) while True: try: x=int(input("Please enter a number:"))