Python Brain Teasers by Miki Tebeka

Author:Miki Tebeka [Miki Tebeka]
Language: eng
Format: epub, pdf
Publisher: Pragmatic Bookshelf
Published: 2021-08-25T00:00:00+00:00

Further Reading

str.find Documentation

http://docs.python.org/3/library/stdtypes.html#str.find

PEP 285: Adding a bool Type

http://python.org/dev/peps/pep-0285/

“Truth Value Testing” in the Python Documentation

http://docs.python.org/3/library/stdtypes.html#truth-value-testing

__bool__ Documentation

http://docs.python.org/3/reference/datamodel.html#object.__bool__

Puzzle 16 Call Me Maybe

metrics.py

​ ​from​ ​functools​ ​import​ wraps

​

​

​ ​def​ ​metrics​(fn):

​ ncalls = 0

​ name = fn.__name__

​

​ @wraps(fn)

​ ​def​ ​wrapper​(*args, **kw):

​ ncalls += 1

​ ​print​(f​'{name} called {ncalls} times'​)

​

​ ​return​ wrapper

​

​

​ @metrics

​ ​def​ ​inc​(n):

​ ​return​ n + 1

​

​

​ inc(3)

Guess the Output

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