You know a lot now! You can convert a lot of numbers from different numeral systems, but here we are going to dive deeper into built-in python functions for converting. Let's start with converting to a decimal one. Here is the function `int()` is useful.

For instance, to convert binary numbers to decimal representation you should start with `0b`. Like int(`0b`10011010010), where `10011010010` number should be converted.

To do the same with the octal numeral system you have to use similar syntax int(`0o`2322) where `2322` should be converted.

I suppose you guessed the syntax for converting from a hexadecimal numeral system: int(`0X`4D2), where `4D2` number should be converted.
```python
decimal_number1 = int(0b10011010010)
decimal_number2 = int(0o2322)
decimal_number3 = int(0X4D2)
```

It can be implemented not only with `int()`, such syntax is available for other numeral systems too:
```python
# Сonverting from binary numeral system to the octal
oct(0b1010)
# Сonverting from octal numeral system to the hexadecimal
hex(0o237)
# Сonverting from hexadecimal numeral system to the binary
bin(0x8ea)
```

This course is beneficial for you to hone your programming skills: you will decipher different numbers. You should be able to handle loops and if statements, it is also beneficial to have basic knowledge of strings.

Have you seen such code 110101 before? It refers to the binary numeral system and is considered to be the most commonly used one. Here you are going to learn the main concepts of converting.

This section is going to help you get acquainted with one less commonly used but vitally important numeral system.

The last numeral system for you and maybe the most complex one, but it is still a superior chance for practicing.

Here you are going to dive deeper into some of the built-in Python functions. This section is going to make you get familiar with converting to different numeral systems without any loops and conditions, just python functions.

Harder Converting

Lösung

Awesome!

Harder Converting

Lösung