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!!! note
**Admission:** I (the primary developer of Pydantic) also develop python-devtools.
[python-devtools](https://python-devtools.helpmanual.io/) (`pip install devtools`) provides a number of tools which
are useful during Python development, including `debug()` an alternative to `print()` which formats output in a way
which should be easier to read than `print` as well as giving information about which file/line the print statement
is on and what value was printed.
Pydantic integrates with *devtools* by implementing the `__pretty__` method on most public classes.
In particular `debug()` is useful when inspecting models:
```python {test="no-print-intercept"}
from datetime import datetime
from devtools import debug
from pydantic import BaseModel
class Address(BaseModel):
street: str
country: str
lat: float
lng: float
class User(BaseModel):
id: int
name: str
signup_ts: datetime
friends: list[int]
address: Address
user = User(
id='123',
name='John Doe',
signup_ts='2019-06-01 12:22',
friends=[1234, 4567, 7890],
address=dict(street='Testing', country='uk', lat=51.5, lng=0),
)
debug(user)
print('\nshould be much easier read than:\n')
print('user:', user)
```
Will output in your terminal:
{{ devtools_example }}
!!! note
`python-devtools` doesn't yet support Python 3.13.
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