Some things and techniques I like python for
Table of Contents
- TODO [C] hacked seaborn to display vs on pairplots python
- TODO [C] hacking logging.Logger to do basicConfig python
- TODO [C] why generators are good: fbchat export example python
- TODO [C] another example of cool generator use in fbchat python
- TODO example of hacky setuplogger python
- [C] hacky 'autonaming' python
- TODO [C] why mypy is good: injector DI library pythontoblogmypy
- TODO [D] Why python is good pythontoblog
- TODO [C] Literal types and demonstrate mypy? Perhaps timezones as example? pythontoblogmypyconfigs
- TODO By highlighting this i will know what patterns to look for in other languages pythontoblog
¶TODO [C] hacked seaborn to display vs on pairplots python
used inspect to extract directly from local variables, lol
https://github.com/mwaskom/seaborn/blob/master/seaborn/axisgrid.py#L1340-L1341
¶TODO [D] why python is good: patching seaborn bootstrap python
I've had nondeterministic behaviour due to random seed
was not propagated, but with a patch it's possible to achieve
# TODO careful.. need to do this ONCE
bootstrap_orig = sns.algorithms.bootstrap
def bootstrap_hacked(*args, **kwargs):
return bootstrap_orig(*args, random_seed=0, **kwargs)
sns.algorithms.bootstrap = bootstrap_hacked
¶TODO [C] hacking logging.Logger to do basicConfig python
logging.basicConfig(
format='%(asctime)s %(levelname)-8s %(message)s',
level=logging.INFO,
datefmt='%Y-%m-%d %H:%M:%S')
However if you are a well-mannered person, you don't want to mess with other loggers and you're probably providing your own logger method
This is a bit horrible
https://stackoverflow.com/a/28330410/706389
For my personal projects I'm using logzero which has got a single line setup method. However, for code I'm sharing with other people I prefer to have as little external dependencies as you can
e.g. libraries should never configure logging
https://www.reddit.com/r/learnpython/comments/69grzn/logging_confuses_me/dh6ngvo/
¶ could publish in r/python? python
¶ sometimes it makes sense for your library to configure other loggers (e.g. requests) python
¶TODO [C] why generators are good: fbchat export example python
separating network retrieval and storing in database. with generators can do it simultaneously
¶TODO [C] another example of cool generator use in fbchat python
mts = int(r.timestamp)
if newest is not None and oldest is not None and newest > mts > oldest:
logger.info('Fetched everything for %s', thread.name)
break # interrupt, thus interrupting fetching data
db.insert_message(thread, r)
¶TODO example of hacky setuplogger python
¶[C] hacky 'autonaming' python
import ast
import traceback
import inspect
src = ast.parse(open(__file__).read())
def find_name(lno: int):
# TODO end_lineno is not set??
node = None
for x in src.body:
if x.lineno >= lno:
break
node = x
[tg] = node.targets
return tg.id
class Namer:
@property
def auto(self) -> str:
stack = inspect.stack()
fr = stack[1]
lno = fr.lineno
return find_name(lno)
N = Namer()
aaaa = (
1,
N.auto,
)
bbbb = (
2,
N.auto,
)
print(aaaa)
print(bbbb)
¶TODO [C] why mypy is good: injector DI library pythontoblogmypy
¶TODO [D] Why python is good pythontoblog
generators, decorators and random dynamic things with examples