I did some experimental with topic 8 STR ()

I can get printed output for

```
pi = 3.14
str(pi)
print pi
```

So i try to excute

```
pi = 3.14
str(pi)
print len(pi)
```

But i get **object of type 'float' has no len()** when expected 4```

I did some experimental with topic 8 STR ()

I can get printed output for

```
pi = 3.14
str(pi)
print pi
```

So i try to excute

```
pi = 3.14
str(pi)
print len(pi)
```

But i get **object of type 'float' has no len()** when expected 4```