How to divide all entries in two lists into one
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I want to take two lists such as:
list1 = [1, 2] list2 = [2, 4, 8, 1]
And receive this result. How would I go about doing this?
result = [1/2, 1/4, 1/8, 1/1, 2/2, 2/4, 2/8, 2/1]
The list could contain more entries so it needs to be able to adapt to the number of entries.
You can simply use a list comprehension:
result = [n/d for n in list1 for d in list2]
This relies on the fact that
list2 does not contain any 0 (you can't divide by 0).
Python, Let's discuss certain ways in which the division of two lists can be The zip operation can be used to link one list with the other and the Recommended Posts: last_page Python | Remove all strings from a list of tuples. 1. Enter the certain number in a blank cell (for example, you need to multiply or divide all values by number 10, then enter number 10 into the blank cell). Copy this cell with pressing the Ctrl + C keys simultaneously. 2. Select the number list you need to batch multiply, then click Home > Paste > Paste Special. See screenshot: 3.
You can use
operator.truediv and instead of
map you can use
from itertools import starmap, product from operator import truediv list(starmap(truediv, product(list1, list2)))
[0.5, 0.25, 0.125, 1.0, 1.0, 0.5, 0.25, 2.0]
This is faster than a nested loop as product replaces the nested loop.
How to divide each element in a list in Python, Use a for loop to divide each element in a list. Use a for loop to iterate through each element in the list. Use the division operator / to divide by a number. Append the resultant quotients to a new list. Supposing you have a list of number strings and you want to split numbers into separate cells as below screenshot shown: 1. Select the number cells and click Kutools> Merge & Split > Split Cells. 2.
import numpy as np list2=1/np.array(list2) x=np.outer(list1, list2).reshape(1,-1)
[0.5 0.25 0.125 1. 1. 0.5 0.25 2. ]
11. Lists — How to Think Like a Computer Scientist: Learning with , The values that make up a list are called its elements, or its items. There are several ways to create a new list; the simplest is to enclose the Each time through the loop, the variable i is used as an index into the list, printing the i'th element. In one case, a and b refer to two different objects that have the same value. How to divide all elements of a list by a number in Python. To divide all the elements, we will generate a random list containing int and float values. Let us generate a random list. List=[5,10.5,15,20.5,25] Now we would like to divide each of the elements by 5. We can divide using “for loop”. Let us see how.
If you actually want fractions then you can try:
from fractions import Fraction list1 = [1, 2] list2 = [2, 4, 8, 1] [Fraction(n,d) for n in list1 for d in list2] [Fraction(1, 2), Fraction(1, 4), Fraction(1, 8), Fraction(1, 1), Fraction(1, 1), Fraction(1, 2), Fraction(1, 4), Fraction(2, 1)]
However you can see that this won't preserve fractions which can be simplified, e.g. 2/8 --> 1/4
9. Lists — How to Think Like a Computer Scientist: Learning with , A list is an ordered set of values, where each value is identified by an index. The range function takes two arguments and returns a list that contains all the integers from the first to the The split function breaks a string into a list of words. Let’s discuss a simple yet useful utility of conversion of two lists into a key:value pair dictionary. Method #1 : Naive Method The basic method that can be applied to perform this task is the brute force method to achieve this.
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18 Most Common Python List Questions, Here's a list of all the questions we will answer in this tutorial: There are two very simple ways to get the values in your lists sorted in ascending or descending order: How To Split A Python List Into Evenly Sized Chunks. Quickly Split one cell into columns or rows based on delimiter: In Excel, to split a cell into columns is tedious with the Wizard step by step. But with Kutools for Excel's Split Cells utility, you can: 1,convert one cell into columns or rows based on delimiter; 2,convert string into text and number; 3,convert string based on specific width, with clicks.
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