Python Articles - Page 527 of 829

When it is required to subtract the tuples, the 'map' method and lambda function can be used.The map function applies a given function/operation to every item in an iterable (such as list, tuple). It returns a list as the result.Anonymous function is a function which is defined without a name. In general, functions in Python are defined using 'def' keyword, but anonymous function is defined with the help of 'lambda' keyword. It takes a single expression, but can take any number of arguments. It uses the expression and returns the result of it.Below is a demonstration of the same −ExampleLive ... Read More

When it is required to find the area and perimeter of a circle using classes, object oriented method is used. Here, a class is defined, and attributes are defined. Functions are defined within the class that perform certain operations. An instance of the class is created, and the functions are used to find the area and perimeter of the circle.Below is a demonstration for the same −Example Live Demoimport math class circle_compute():    def __init__(self, my_radius):       self.radius=my_radius    def area_calculate(self):       return math.pi*(self.radius**2)    def perimeter_calculate(self):       return 2*math.pi*self.radius my_result = int(input("Enter the radius ... Read More

When it is required to append, delete, and display the elements of a list using classes, object oriented method is used. Here, a class is defined, and attributes are defined. Functions are defined within the class that perform certain operations. An instance of the class is created, and the functions are used to add elements to the list, delete elements from the list and display the elements of the list using objects.Below is a demonstration for the same −Example Live Democlass list_class():    def __init__(self):       self.n=[]    def add_val(self, a):       return self.n.append(a)    def remove_val(self, ... Read More

When it is required to find the area of a rectangle using classes, object oriented method is used. Here, a class is defined, attributes are defined. Functions are defined within the class that perform certain operations. An instance of the class is created, and the functions are used to find the area of rectangle.Below is a demonstration for the same −Example Live Democlass shape_rectangle(): def __init__(self, my_length, my_breadth):    self.length = my_length    self.breadth = my_breadth def calculate_area(self):    return self.length*self.breadth len_val = 6 bread_val = 45 print("The length of the rectangle is : ") print(len_val) print("The breadth of the rectangle ... Read More

In this article, we will explore different ways to replace duplicate occurrences in a string. Before understanding the solution let's try to understand the problem statement with an example. Consider a string "Ram lives in Hyderabad. Ram is studying in class 10. Ram is the class Monitor of the class." In this string "Ram" appears multiple times we need to replace the duplicate occurrences with 'He', keeping the first occurrence unchanged. Replacing Duplicate Occurrences in a String Following are the multiple ways to replace duplicate occurrences in a string − Using List comprehension ... Read More

When it is required to remove empty tuples from a list of tuples, a simple loop can be used.A list can be used to store heterogeneous values (i.e data of any data type like integer, floating point, strings, and so on).A list of tuple basically contains tuples enclosed in a list.Below is a demonstration for the same −Example Live Demodef remove_empty(my_tuple):    my_tuple = [t for t in my_tuple if t]    return my_tuple my_tuple = [(), (), (''), (" " , " "), (45, 67, 35, 66, 74, 89, 100) , 'jane'] print("The tuple is : ") print(my_tuple) print("The method ... Read More

When it is required to edit the objects inside a tuple, simple indexing can be used.A list can be used to store heterogeneous values (i.e data of any data type like integer, floating point, strings, and so on).Below is a demonstration for the same −Example Live Demomy_tuple = (45, 67, [35, 66, 74], 89, 100) print("The tuple is : ") print(my_tuple) my_tuple[2][1] = 63 print("The tuple after changes is : ") print(my_tuple)OutputThe tuple is : (45, 67, [35, 66, 74], 89, 100) The tuple after changes is : (45, 67, [35, 63, 74], 89, 100)ExplanationA tuple of list is defined, and ... Read More

When it is required to find longest common substring using dynamic programming with bottom-up approach, a method can be defined, that computes the solution to smaller problems. These smaller problem results don’t need to be computed again and again. Instead, they can just be accessed when required. This would lead to developing a solution to the bigger problem in hand.Below is a demonstration for the same −Example Live Demodef compute_lcw(string_1, string_2):    val = [[-1]*(len(string_2) + 1) for _ in range(len(string_1) + 1)]    for i in range(len(string_1) + 1):       val[i][len(string_2)] = 0    for j in range(len(string_2)): ... Read More

When it is required to assign a specific value to the non max-min elements in a tuple, the ‘max’ method, the ‘min’ method, the ‘tuple’ method and a loop can be used.The ‘max’ method returns the maximum value among all of the elements in an iterable. The ‘min’ method returns the minimum value among all of the elements in an iterable.The ‘tuple’ method converts a given value/iterable into a tuple type.Below is a demonstration for the same −Example Live Demomy_tuple = (25, 56, 78, 91, 23, 11, 0, 99, 32, 10) print("The tuple is : ") print(my_tuple) K = 5 print("K ... Read More

When it is required to sort a list of tuples based on the second item, the lambda function and ‘sorted’ method can be used.A list can be used to store heterogeneous values (i.e data of any data type like integer, floating point, strings, and so on). A list of tuple basically contains tuples enclosed in a list.Anonymous function is a function which is defined without a name.In general, functions in Python are defined using ‘def’ keyword, but anonymous function is defined with the help of ‘lambda’ keyword. It takes a single expression, but can take any number of arguments. It ... Read More