Python on DevFlow · Python Django Developer Freelance https://dev-flow.io/en/categories/python/ Recent content in Python on DevFlow · Python Django Developer Freelance Hugo en Fri, 29 May 2026 00:00:00 +0200 Python itertools: building lazy iterator pipelines https://dev-flow.io/en/posts/python-itertools/ Fri, 29 May 2026 00:00:00 +0200 https://dev-flow.io/en/posts/python-itertools/ Python itertools by example: count, cycle, chain, groupby, accumulate, product, combinations. Lazy pipelines, common pitfalls, and real-world use cases. Python collections : Counter, defaultdict, deque and the rest https://dev-flow.io/en/posts/python-collections-module/ Fri, 22 May 2026 00:00:00 +0200 https://dev-flow.io/en/posts/python-collections-module/ Python collections module: Counter, defaultdict, namedtuple, deque, OrderedDict, ChainMap with practical examples. When and why to replace dict and list. Python shutil: copy, move and archive files without subprocess https://dev-flow.io/en/posts/python-shutil-file-operations/ Thu, 21 May 2026 00:00:00 +0200 https://dev-flow.io/en/posts/python-shutil-file-operations/ Python shutil: the standard library for copying, moving and archiving files. copy, move, copytree, rmtree, make_archive explained with concrete examples. Python operator: itemgetter, attrgetter and the art of replacing lambdas https://dev-flow.io/en/posts/python-operator-itemgetter-attrgetter/ Wed, 20 May 2026 00:00:00 +0200 https://dev-flow.io/en/posts/python-operator-itemgetter-attrgetter/ Python's operator library offers ready-made callables for sorting, reduction and attribute extraction. Faster and more readable than equivalent lambdas. Python dataclasses: field(default_factory) in depth https://dev-flow.io/en/posts/python-dataclass-field-default-factory/ Tue, 19 May 2026 00:00:00 +0200 https://dev-flow.io/en/posts/python-dataclass-field-default-factory/ default_factory in Python dataclasses prevents the shared mutable default trap. Internal mechanism, sentinel pattern, and real-world use cases. Python __add__ and __iadd__: copy or in-place mutation https://dev-flow.io/en/posts/python-add-iadd/ Fri, 15 May 2026 00:00:00 +0200 https://dev-flow.io/en/posts/python-add-iadd/ __add__ creates a new object while __iadd__ mutates in place. The difference matters for aliases and shared references: here are the concrete traps to avoid. Python @property: from encapsulation to descriptors https://dev-flow.io/en/posts/python-property-descriptors/ Tue, 12 May 2026 00:00:00 +0200 https://dev-flow.io/en/posts/python-property-descriptors/ @property adds validation and computed attributes to Python without changing the interface. When logic repeats across classes, descriptors take over. Python __slots__: cut instance memory by 40–60% without changing your logic https://dev-flow.io/en/posts/python-slots-memory-optimization/ Wed, 06 May 2026 00:00:00 +0200 https://dev-flow.io/en/posts/python-slots-memory-optimization/ Python __slots__ removes the per-instance __dict__ and cuts memory by 40–60%. Concrete measurements, inheritance pitfalls, and dataclass integration.