There are several options... Use list comprehension, if short enough: You could also use map(), if the function exists before (or you will eg. use lambda): return value * 10. Be aware, that in Python 3.x map() does not return a list (so you would need to do something like this: new_list = list(map(my_func, old_list))).

Jan 17, 2020 · I'm trying to populate a list with a for loop. This is what I have so far: newlist = [] for x in range(10): for y in range(10): newlist.append(y) and at this point I am stumped. I was hoping the loops would give me a list of 10 lists.

Feb 8, 2024 · In Python, creating a list of lists using a for loop involves iterating over a range or an existing iterable and appending lists to the main list. This approach allows for the dynamic generation of nested lists based on a specific pattern or …

Nov 30, 2013 · A human has 22 chromosomes and 2 sex chromosomes X and Y. I would like to generate these chromosome name from 'chr1', 'chr2', 'chr3' ... 'chr22', 'chrX' and to 'chrY' with input of only number of chromosome and X and Y. # Input the data here number_of_chr = 22,'X','Y' for x in range(number_of_chr[0]): print('chr'+str(x+1))

Python For Loops. A for loop is used for iterating over a sequence (that is either a list, a tuple, a dictionary, a set, or a string). This is less like the for keyword in other programming languages, and works more like an iterator method as found in …

Use the range() and len() functions to create a suitable iterable. Print all items by referring to their index number: The iterable created in the example above is [0, 1, 2]. You can loop through the list items by using a while loop.

Feb 20, 2024 · 💡 Problem Formulation: In Python, how do you transform a sequence or range of elements into a list using a for loop? For instance, you might want to take a range of numbers from 1 to 10, or a list of strings and create a new list where each item has been processed or filtered in some way.

Python’s for loop allows you to iterate over the items in a collection, such as lists, tuples, strings, and dictionaries. The for loop syntax declares a loop variable that takes each item from the collection in each iteration. This loop is ideal for repeatedly executing a block of code on each item in the collection.

Jan 2, 2025 · Here we are using a while loop to iterate through a list. We first need to find the length of list using len (), then start at index 0 and access each item by its index then incrementing the index by 1 after each iteration. We can also use …

Jul 12, 2021 · Using the range function you can create a list with for loop in Python. Use Python For Loop, to iterate over each element of the range, and then append the item to the list. Simple python example code. list_1.append(x) Output: Another example using map () Objects. return txn * (1 + TAX_RATE) Output: [5.4, 21.6, 54.0, 43.2]