In this example, the function calculate_statistics() takes a list of numbers as an argument, calculates the mean, variance, and standard deviation, and returns them as a tuple using the return statement. Example
mean, stddev = calculate_statistics([1, 2, 3, 4, 5]) print(mean, stddev) # 输出 3.0 1.4142135623730951 2. Web开发 在Web开发中,函数通常用于处理请求、生成响应、处理业务逻辑等。通过return语句,我们可以将处理结果返回给调用者。例如,下面的函数处理用户登录请求,并返回相应的响应对象: def login_user...
Python 支持函数返回多个值,这进一步凸显了 return 的灵活性。 def get_statistics(data): mean = sum(data) / len(data) variance = sum((x - mean) ** 2 for x in data) / len(data) return mean, variance data = [1, 2, 3, 4, 5] mean, variance = get_statistics(data) print(`Mean:...
In mean(), you don’t use a local variable to store the result of the calculation. Instead, you use the expression directly as a return value. Python first evaluates the expression sum(sample) / len(sample) and then returns the result of the evaluation, which in this case is the value...
returnvdefvariance(data,ddof=0):n=len(data)mean=sum(data)/ntotal_square_dev=sum((x-mean)*...
创建像数据一样的正弦波,我们将使用Python数学库中的正弦函数: sin_wave = np.array([math.sin(x) for x in np.arange(200)]) 1. 将刚刚生成的正弦波可视化: plt.plot(sin_wave[:50]) 1. 我们现在将在下面的代码块中创建数据: X = []
Note that since Python 3.12, you can specify type aliases using the new soft keyword type. A soft keyword only becomes a keyword when it’s clear from the context. Otherwise, it can mean something else. Remember that type() is also one of the built-in functions in Python. Here’s how...
# 计算python程序执行时间的装饰器import timedef my_timer(func): def _timer(*args, **kwargs): start = time.time() result = func(*args, **kwargs) end = time.time() print(f'耗时: {end - start}') return result return _timer@my_timerdef delayed_mean(sample): # 等价于表达式 my_ti...
Pandas 是 Python 中的标准工具，用于对进行数据可扩展的转换，它也已成为从 CSV 和 Excel 格式导入和...
I specifically wonder what__returnn_config__._weight_decay_blacklistis exactly. What is__returnn_config__? Why is it in there? What type is it? What does it mean to be a "GLOBAL"? What is_weight_decay_blacklist? What type is it? Is this a list?