Friendly Number

Friendly Number

Long numbers can be made to look nicer, so let’s write some code to do just that.

You should write a function for converting a number to string using several rules.

First of all, you will need to cut the number with a given base (base argument; default 1000).

The value is a float number with decimal after the point (decimals argument; default 0). For the value, use the rounding towards zero rule (5.6 ⇒ 5, -5.6 ⇒ -5, to integer part) if the decimal = 0, otherwise use the standard rounding procedure.

If the number of decimals is greater than the current number of digits after dot, trail value with zeroes.

The number should be a value with letters designating the power. You will be given a list of power designations (powers argument; default ["", "k", "M", "G", "T", "P", "E", "Z", "Y"] ). If you don’t have enough powers - stay at the maximum.

If you are given suffix (suffix argument; default ""), then you must append it.

And zero is always zero without powers, but with suffix.

Let's look at examples. It will be simpler.

NumberResultExplanation
102"102"the base is default 1000 and 102 is lower this base
10240"10k"the base is default 1000 and rounding down
12341234, decimals=1"12.3M"one digit after the dot
12000000, decimals=3"12.000M"trailing zeros
12461, decimals=1"12.5k"standard rounding
1024000000, base=1024, suffix="iB""976MiB"the different base and the suffix
-150, base=100, powers=["", "d", "D"]"-1d"the negative number and rounding towards zero
-155, base=100, decimals=1, powers=["", "d", "D"]"-1.6d"the negative number and standard rounding
255000000000, powers=["", "k", "M"]"255000M"there is not enough powers

Input: number, base, decimals as integers (int), suffix as a string (str), powers as list of strings (str).

Output: The converted number as a string (str).

Examples:

assert friendly_number(102, {}) == "102"
assert friendly_number(12341234, {"decimals": 1}) == "12.3M"
assert friendly_number(12000000, {"decimals": 3}) == "12.000M"
assert friendly_number(102, {"decimals": 2}) == "102.00"

How it is used: In the physics and IT we have a lot of various numbers. Sometimes we need to make them more simpler and easier to read. When you talk about gigabytes sometimes you don’t need to know the exact number bytes or kilobytes.

Preconditions:

  • 1 < base ≤ 1032
  • -1032 < number ≤ 1032
  • 0 ≤ decimals ≤ 15
  • 0 < len(powers) ≤ 32

Settings
Code:
Other:
Invalid hot key. Each hot key should be unique and valid
Hot keys:
CheckiO Extensions

CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.

In order to install CheckiO client you'll need installed Python (version at least 3.8)

Install CheckiO Client first:

pip3 install checkio_client

Configure your tool

checkio --domain=py config --key=

Sync solutions into your local folder

checkio sync

(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)

checkio serv -d

Alternatevly, you can install Chrome extension or FF addon

checkio install-plugin
checkio install-plugin --ff
checkio install-plugin --chromium

Read more here about other functionality that the checkio client provides. Feel free to submit an issue in case of any difficulties.

Pair Programming (Beta-version)

Welcome to Pair Programming! Engage in real-time collaboration on coding projects by starting a session and sharing the provided unique URL with friends or colleagues. This feature is perfect for joint project development, debugging, or learning new skills together. Simply click 'Start Session' to begin your collaborative coding journey!

Waiting for Pair Programming to start...

You are trying to join a pair programming session that has not started yet.

Please wait for the session creator to join.

Waiting for Pair Programming to reconnect...

It looks like the creator of the pair programming session closed the editor window.

It might happen accidentally, so that you can wait for reconnection.

×
 
 
<< <
> >>
exec show

Whats Next?

Free accounts will see Best CheckiO solutions with some delay.
Best Solutions will be opened in a moment
Become Awesome and Don't wait
The next stage is ""
Will be activated in
View More Solutions Random Review Solutions Go to the next mission