Next, use the list comprehension to do the following tasks
Make a list python how to#
Let’ see how to use the list Comprehension to get the list as an input from the user. It is generally a list of iterables generated to include only the items that satisfy a condition. List comprehension is a more straightforward method to create a list from an existing list.
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User list is Input a list using a list comprehension Add the current number to the list using the append() function.
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use the input() function to receive a number from a user.Run loop till the size of a list using a for loop and range() function.Next, accept a list size from the user (i.e., the number of elements in a list).Let’s see how to accept Python list as an input without using the split() method. Input a list using input() and range() function If you want to accept a list with float numbers you can use the float() function. With those in mind, we converted each element into a number using an int() function. Note: Python input() function always converts the user input into a string then returns it to the calling program. Output: Enter elements of a list separated by space 5 10 15 20 25 30 If you want a list of strings as input then skip this step.Įxample 1: Get a list of numbers as input from a user and calculate the sum of it input_string = input('Enter elements of a list separated by space ')
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Then we iterate through the inner loop using 2 to produce this range: range(4, 50, 2). Hopefully that isn't too complicated! As an example, the first time we iterate through the outer loop, we generate the number 2. During each iteration we will use the number to iterate through the range 2i through 50 with an interval of i. In this example we are using set comprehension to iterate through the numbers 2 through 7. The function range(2, 8) will generate the numbers 2-7. We are using a set in this case because we only want to include each multiple once. noprimes = set(j for i in range(2, 8) for j in range(i*2, 50, i)) Therefore, if we want to generate a list of non-primes under 50 we can do so by generating multiples. A prime number is one that is only divisible by 1 and itself. To begin, we need to think about what a prime number is. Generating a list of non-primes is much simpler than generating a list of primes.