In python 3.6 (and above hopefully), dictionary keys are going to be ordered, while their documentation still reference them as being unordered.

https://docs.python.org/3/tutorial/datastructures.html#dictionaries 

1: `It is best to think of a dictionary as an unordered set of key: value pairs,...`

2: `Performing list(d.keys()) on a dictionary returns a list of all the keys used in the dictionary, in arbitrary order..`

The examples should also be changed to reflect the same:
```
>>> tel = {'jack': 4098, 'sape': 4139}
>>> tel['guido'] = 4127
>>> tel
{'sape': 4139, 'guido': 4127, 'jack': 4098}
>>> tel['jack']
4098
>>> del tel['sape']
>>> tel['irv'] = 4127
>>> tel
{'guido': 4127, 'irv': 4127, 'jack': 4098}
>>> list(tel.keys())
['irv', 'guido', 'jack']
>>> sorted(tel.keys())
['guido', 'irv', 'jack']
>>> 'guido' in tel
True
>>> 'jack' not in tel
False
```

```
>>> dict([('sape', 4139), ('guido', 4127), ('jack', 4098)])
{'sape': 4139, 'guido': 4127, 'jack': 4098}
```

```
>>> dict(sape=4139, guido=4127, jack=4098)
{'sape': 4139, 'guido': 4127, 'jack': 4098}
```

Would you like to make a pull request or do you prefer for me to assign it to someone else?

Also check the 3.7 docs to see if this work has already been done.

It's unlikely that the 3.6 docs will change because it is considered a non-guaranteed implementation detail for 3.6.