# Numbers

Posted on September 06, 2021

Python includes three numeric types such as integers `int`

, float `float`

, and complex `complex`

numbers.

```
# an integer
a = 2
# a float
b = 3.89
# a complex number
c = 2 + 5j
```

## Underscore

```
# use underscores to represent commas
>>> million = 1_000_000
>>> million
1000000
```

## Round a number

```
# round to a whole number
>>> round(1875.82)
1876
>>> round(1875.82, -2)
1900.0
# round to a decimal place
>>> round(1875.82, 1)
1875.8
```

**Back**