用list comprehension来写: pre_2000 = [title for (title, year) in movies if year < 2000] 例五[expr for var in [a, b, c]] 有一个向量v_1 = [a, b, c],根据空间解析几何4v_1 = v_2, v_2应该是[4*a, 4*b, 4*c],要求用python 写出v_2 误区:不能直接4*v_1因为那样会得到 [...
List Comprehension numbers = [1, 2, 3, 4, 5] # create a new list using list comprehension square_numbers = [num * num for num in numbers] print(square_numbers) # Output: [1, 4, 9, 16, 25] Run Code It's much easier to understand list comprehension once you know Python for...
Obviously I’m being a little silly myself here (or am I?) but this is good example of something you just wouldn’t be able to do (cleanly) with the map() function but which is super easy with a list comprehension; combining input object types for the function being used to operate ...
Python Advanced Topics List comprehension Python Lambda/Anonymous Function Python Iterators Python Generators Python Namespace and Scope Python Closures Python Decorators Python @property decorator Python RegEx Python Date and Time Python datetime Python strftime() Python strptime() How to get current date...
Python List Comprehension Wenn du dir die Python-Listen noch einmal vor Augen führst, wird dir schnell klar, dass das Definieren und Erstellen von Listen in Python eine mühsame Arbeit sein kann: Alle Werte einzeln einzutippen, kann ziemlich viel Zeit in Anspruch nehmen und du kannst leicht...
Using list comprehension can also be handy if you want to print the index of the first element.first_index = [i for i in range(len(my_list)) if my_list[i] == 'a'][0] print(first_index) # 0This code finds the first occurrence of ‘a’ in my_list and prints its index. If...
Hi! This tutorial will show you 3 simple ways to convert a list of floats to integers in the Python programming language.First, though, here is an overview of this tutorial:1) Create List of Floats 2) Example 1: Convert List from Float to Integer using List Comprehension 3) Example ...
Write a Python program to print the numbers of a specified list after removing even numbers from it. Calculating a Even Numbers: Sample Solution: Python Code: # Create a list 'num' containing several integer valuesnum=[7,8,120,25,44,20,27]# Use a list comprehension to create a new lis...
Python Code : # Define a function 'sort_sublists' that takes a list of lists 'input_list' as inputdefsort_sublists(input_list):# Use list comprehension to create a new list 'result'# Sort each sublist in 'input_list' based on the first element of each sublist# The sorted() function...
comprehension = """ my_duplicate_list = [item for item in pens] """ sliced = """ my_duplicate_list = pens[:] """ constructor = """ my_duplicate_list = list(pens) """ starred = """ my_duplicate_list = [*pens] """ copied = """ my_duplicate_list = pens.copy() """ ...