Learn how to calculate the average of a set of numbers in Python. This program demonstrates how to iterate through a list of numbers, calculate the sum, and divide by the total number of elements to find the average. Follow along with the code and try it
编写一个Python函数,接收一个整数列表作为参数,返回列表中所有偶数的平均值。```pythondef average_even(numbers):evens = [x for x in numbers if x % 2 == 0]if len(evens) == 0:return 0return sum(evens) / len(evens)numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]print(a
这是一个简短的工作版本:print("This program 'is' designed to find the average of n numbers you input\n")first_question = 'Would you like to enter a number? (type "yes" if you do)\n\n'second_question = 'Would you like to enter another number after this? (type "yes" if you do)...
Write a Python program to get the weighted average of two or more numbers. A weighted average is an average in which some of the items to be averaged are 'more important' or 'less important' than some of the others. The weights are (non-negative) numbers which measure the relative impor...
# A program to find the sum of the first n natural numbers def main(): n = int(input("Please enter the value of n: ")) s = 0 for i in range(1, n + 1): s += i # s = n * (n + 1) // 2 print("The sum from i to", n, "is", s) ...
1#A program to find the sum of the first n natural numbers2defmain():3n = int(input("Please enter the value of n:"))4s =05foriinrange(1, n + 1):6s +=i7#s = n * (n + 1) // 28print("The sum from i to", n,"is", s)910main() ...
return sum(numbers) / len(numbers) try: calculate_average([]) except AssertionError as e: print(f"断言失败:{e}") 1. 2. 3. 4. 5. 6. 7. 8. 2)单元测试中的异常检查 import unittest def divide(a, b): if b == 0: raise ZeroDivisionError("除数不能为零") ...
在sqlite3模块中管理事务—参见“将连接用作上下文管理器”。 安全处理锁、条件和信号量,如threading模块文档中所述。 为Decimal对象设置自定义环境进行算术运算—参见decimal.localcontext文档。 为测试修补对象—参见unittest.mock.patch函数。 上下文管理器接口由__enter__和__exit__方法组成。在with的顶部,Python 调...
一.下载安装 1.1Python下载 Python官网:https://www.python.org/ 1.2Python安装 1.2.1 Linux 平台安装 以下为在Unix & Linux 平台上安装 Python 的简单步骤: 打开WEB浏览器访问https://www.python
Often when we’re using numbers, but also,occasionally, with other types of objects,we would like to do some type of randomness. 例如,我们可能想要实现一个简单的随机抽样过程。 For example, we might want to implement a simple random sampling process. 为此,我们可以使用随机模块。 To this end,...