example-code-2e

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Typing for metaclass examples

2

Consider the example in 24-class-metaprog/factories.py (corresponds to example 24-2, page 912 in my copy) ``` Dog = record_factory('Dog', 'name weight owner') rex = Dog('Rex', 30, 'Bob') ``` We do not...

jsrozner

concurrency examples

1

hi. so i know that you probably know this but if there will be a 3rd edition, exapmles 19-13 and 19-12 (and other examples in chapter 19) need a rework....

amirreza8002

I think there is a slight typo on page 745: 

kamalfarahani

Hi Luciano, In chapter 22 you mention that `FrozenJSON.__getattr__()` raising a `KeyError` is "not to confusing". However, today I discovered a side effect from this that __is__ confusing: `copy.copy(FrozenJSON({'name': 'Jim...

hayemj

ShapelessCat

`return` in `finally` considered harmful https://github.com/iritkatriel/finally/blob/main/README.md

ramalho

Hi! I was going through script [explore1.py](https://github.com/fluentpython/example-code-2e/blob/master/22-dyn-attr-prop/oscon/explore1.py) from chapter 22, in particular in the [__init__ method](https://github.com/fluentpython/example-code-2e/blob/master/22-dyn-attr-prop/oscon/explore1.py#L56) and I wrote the following code instead of the code in the script: ```...

andyLaurito92

I believe the pseudocode for object construction on page 843 is somewhat misleading: ```python def make(the_class, some_arg): new_object = the_class.__new__(some_arg) if isinstance(new_object, the_class): the_class.__init__(new_object, some_arg) return new_object ``` Firstly, it...

kamalfarahani

Chapter 21 - tcp_mojifinder.py crashes on empty search result

2

## Issue If [`index.search(query)`](https://github.com/fluentpython/example-code-2e/blob/master/21-async/mojifinder/tcp_mojifinder.py#L45) in `tcp_mojifinder.py` returns empty result, it crashes TCP because [`asyncio.StreamWriter.writelines(data)`](https://docs.python.org/3/library/asyncio-stream.html#asyncio.StreamWriter.writelines) raises `AssertionError: Data should not be empty` error if `data` is an empty iterable. ### How...

timheiko

I updated 21-async/mojifinder/tcp_mojifinder.py so search now builds a list of response lines and guards the writelines call, preventing any edge-case crash when there are no matches.

marktech0813