How to change a list of probability to percentile？

Question

How to change a list of probability (0.08, 0.002 ,0.01,0.5.....) to a list of percentile[values from 5 to 100 by 5 (5, 10, 15, ..., 100)]

Answer 1

Let's say we have a list of values, in decimal form.

myNumbers = [ 0.05, 0.10, 0.15, 0.30, 0.5, 0.99 ]

If we want them to be in normal percent form, there are a few things we can do. We can just multiply every value by 100, turning it into a decimal:

for index in range(len(myNumbers)):

myNumbers[index] = myNumbers[index] * 100

print(myNumbers)

# [5.0, 10.0, 15.0, 30.0, 50.0, 99.0]

If we wanted to add a percent sign, we can do that too by modifying the above code slightly:

for index in range(len(myNumbers)):

myNumbers[index] = myNumbers[index] * 100

myNumbers[index] = str(myNumbers[index]) + "%"

print(myNumbers)

# ['5.0%', '10.0%', '15.0%', '30.0%', '50.0%', '99.0%']

Maybe we want them not to have a 0 at the end. This happens because the value is a decimal (or a float) and then converted into a string. We can first convert the float into an int, to get rid of that 0.

for index in range(len(myNumbers)):

myNumbers[index] = int(myNumbers[index] * 100) # Change here

myNumbers[index] = str(myNumbers[index]) + "%"

print(myNumbers)

# ['5%', '10%', '15%', '30%', '50%', '99%']

If we want to make it specific intervals (like 5) then all we would need to do is round the numbers in advance. So for example if you wanted the percent 0.02 (2%) to round to 5%, you'd want to multiply by 100 and then round to the nearest multiple of 5. Here's a program that does it to 10:

number = int(input('Enter a number :'))

rounded = round(number/10)*10

print('Rounded Number :', rounded)

#Output

#Enter a number :3652

#Rounded Number : 3650