I've googled it as well. I'm not sure what it's function is.

Thanks

It is an *multiply and assign* operator.

```
+=
-=
*=
/=
%=
```

When we have a given value in a variable,

`my_var = 6`

we can multiply it by a number and assign the result back to the variable

```
my_var *= 6
print my_var # 36
```

Now,

```
my_var += 6
print my_var # 42
```

and,

```
my_var /= 7
print my_var # 6
```

finally,

```
my_var -= 3
print my_var # 3
```

and,

```
my_var %= 3
print my_var # 0
```

If I may add the following (taken from this thread)

Here is what official Python Doc has to say on augmented assignment operators:

Augmented assignment is the combination, in a single statement, of a binary operation and an assignment statement

x += 1 can be rewritten as x = x + 1

Possible augmented assignment operations are:

```
+= # addition
-= # substraction
*= # multiplication
/= # divison
//= # floor division
**= # exponentiation
%= # modulo
<<= # left shift
>>= # right shift
&= # boolean AND
^= # boolean XOR
|= # boolean OR
```