PyCaxias 2020
+
+
+ -
+
- Júlio Biason +
- https://functional.cafe/@juliobiason +
- https://t.me/juliobiason +
- julio.biason@pm.me +
-
+
- Co-coordenador do meetup PyTche +
- Coordenador do meetup Rust in POA +
- Co-coordenador do meetup Design de Código +
- Palestrante do Tchelinux +
JulioBiason.me
+ +-
+
- Blog +
- Presentations +
- Git +
- CV/Resumé +
- Books +
"Coisas Que Eu Aprendi Na Marra (Em 30 Anos de Desenvolvimento de Software)
+😞
+Python: Passado, Presente e Futuro
+ +... na minha visão
+O Passado
+Python 1.5
+
+ Python 1.5 (1998)
+-
+
assert
+ - raw strings (
r'')
+ - Novos métodos de dicionários:
.clear(),.copy(),.update(),.get()
+
[expression] and [on_true] or [on_false]
"Vamos fazer um browser em Python!"
+
+
+ -
+
- Web Server +
- Storage: Pickle +
- Atualizado storage: MySQL +
- Criada toda uma camada para que o carregamento parecesse com leitura de pickles +
Django 1.0: 2008
+"É mais fácil pra mim vender AJAX e Rails do que Flash e Python."
+-- Tilefile CEO
+
+ 
+ O Presente
+
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ 
+ O Futuro
+You can't connect the dots looking forward; you can only connect them looking backwards.
+-- Steve Jobs
+No man is an island,
+ Entire of itself,
+ Every man is a piece of the continent,
+ A part of the main.
-- John Donne
+Type Hinting: Love it
+"Mas Python não tem tipos!"
+ +
+In [1]: type(object)
+Out[1]: type
+ 
+
+In [4]: type("a")
+Out[4]: str
+
+In [5]: type(str)
+Out[5]: type
+
+def to_fahrenheit(temperature: int) -> int:
+
+@dataclass
+class Celcius:
+ temperature: int
+
+
+def to_fahrenheit(temperature: Celcius) -> int:
+ mypy
+
+ ??
+ +None-aware operator (PEP 505)
+ +
+a ??= 'value'
+
+a = a if a is not None else 'value'
+ @
+ +Dedicated infix operator for matrix multiplication (PEP 465)
+|
+ +Union Operator to Dict (PEP 584)
+ +
+dict1.update(dict2) # in-place
+
+dict3 = dict1 | dict2
+
+dict1 |= dict2 # same as .update()
+ :=
+ +Assignment Operator (PEP 572)
+ +
+while chunk := file.read(8192):
+ process(chunk)
+ @dict[key].attr[0].decorator
+ +Relaxing Grammar Restrictions On Decorators (PEP 614)
+Steering Council 🤔
+Python Positional-Only Parameters (PEP 570)
+ +
+pow(x, y, z=None, /)
+...
+
+>>> pow(x=5, y=3)
+Traceback (most recent call last):
+ File "<stdin>", line 1, in <module>
+TypeError: pow() takes no keyword arguments
+ "Without the ability to specify which parameters are + positional-only, library authors must be careful when + choosing appropriate parameter names."
+ +🤦
+
+ 
+ 
+ ??
+-
+
- https://functional.cafe/@juliobiason +
- https://t.me/juliobiason +
- julio.biason@pm.me +
- https://presentations.juliobiason.me +
-<<<<<<< Updated upstream
-
-=======
->>>>>>> Stashed changes