# Example of inefficient code # Repetitive calculation within nested loop result = 0 foriinrange(n): forjinrange(n): result += i * j returnresult def test_07_v1(n): # Example of improved code # Utilize precompu
returnsquare returnNone# No even square found # Example of improved code that # finds result without redundant computations deffunction_do_something_v1(numbers): even_numbers=[iforninnumbersifn%2==0] fornineven_numbers: square=n*n returnsquare returnNone# No even square found 这个方法要在设...
# Function to return the square of a number def square(num): return num * num print(square(4)) Output: Explanation: Here, the * operator is defined by the user to find the square of the number. Defining a Function in Python While defining a function in Python, we need to follow ...
Once the basic syntax of these data types is learnt, you can start growing your Python knowledge which will let you to more and more interesting operations with string handling. Always remember that the main goal of the learning process is towrite clean and efficient code to automate routinary ...
___>>>c()___>>>d=lambda f:f(4)# They can have functionsasargumentsaswell.>>>defsquare(x):...returnx*x>>>d(square)___>>>z=3>>>e=lambda x:lambda y:lambda:x+y+z>>>e(0)(1)()___>>>f=lambda z:x+z>>>f(3)___>>>higher_order_lambda=lambda f:lambda x:f(x...
foryinrange(height): draw.point((x, y), fill=rndColor()) # 输出文字: fortinrange(6): draw.text((60* t +10,150), rndChar(), font=font, fill=rndColor2()) # 模糊: image = image.filter(ImageFilter.BLUR) image.save('code.jpg',...
例如：# file: math_functions.pydefsquare(x):returnx*xdefcube(x):returnx*x*x此文件是一个模块...
(self,width,height):super().__init__(width,height,width,height)classSquare(Rectangle):def__init__(self,side):super().__init__(side,side)# 正方形的所有边长相等,符合LSP# 示例中,Square可以替代Rectangle而不影响程序正确运行shapes=[Rectangle(5,7),Square(6)]forshapeinshapes:print(shape....
用列表推导式能构建的任何列表,用别的都可以构建,比如for循环 特点: 1.一行,简单,感觉高端,但是不易排错 使用debug模式,没法依次查看每一个值。 第一个例子 li = [i for i in range(1,101)] print(li) 1. 2. 第二个例子 li = ['python%s期' %i for i in range(1,12)] ...
def square(x): """ A simple function to calculate the square of a number by addition. """ sum_so_far = 0 for counter in range(x): sum_so_far = sum_so_far + x return sum_so_farOutput (Python 2.x):>>> square(10) 10...