-
-
Save SPRIME01/6e6f7a4fd95afdc979cde3c987173553 to your computer and use it in GitHub Desktop.
Python, the good parts
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # string format with kwargs | |
| user = { | |
| 'first_name': 'John', | |
| 'last_name': 'Doe', | |
| 'email': 'j.doe@example.com', | |
| } | |
| user_bio = '{first_name} is registered with email: {email}'.format(**user) | |
| # context managers | |
| """Say you want to write something like this: | |
| with Timer('measure my DB query'): | |
| user_count = User.objects.filter(active=True).count() | |
| And here it would output: | |
| measure my DB query: 0.12 | |
| Well, to accomplish this we simply need a python class with __enter__ and __exit__ methods. | |
| """ | |
| import time | |
| class Timer(object): | |
| """my timer context manager""" | |
| def __init__(self, name): | |
| self.name = name | |
| def __enter__(self): | |
| self.start = time.time() | |
| def __exit__(self, *args): | |
| self.end = time.time() | |
| self.interval = self.end - self.start | |
| print('{name}: {interval}'.format(**self.__dict__) | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment