Panel-ready Python & Django questions for freshers and experienced developers. Practice at Coding Cadre in Faridabad, or Online from Delhi NCR.
It builds a list from an expression and optional filter in one readable line.
Open the full page for Why, Steps, Example and Key takeaway.
Lists are mutable
Open the full page for Why, Steps, Example and Key takeaway.
args collects extra positional arguments as a tuple.
Open the full page for Why, Steps, Example and Key takeaway.
A generator yields values lazily with yield instead of building a full list in memory.
Open the full page for Why, Steps, Example and Key takeaway.
Model talks to the database, View holds request logic, Template renders HTML.
Open the full page for Why, Steps, Example and Key takeaway.
ORM maps Python model classes to tables and builds SQL for you.
Open the full page for Why, Steps, Example and Key takeaway.
is checks identity
Open the full page for Why, Steps, Example and Key takeaway.
N+1 means one query for a list plus one per related object in a loop.
Open the full page for Why, Steps, Example and Key takeaway.
Good for light decoupled side effects
Open the full page for Why, Steps, Example and Key takeaway.
Forms validate browser POST data and render HTML widgets.
Open the full page for Why, Steps, Example and Key takeaway.
Multiple workers, timeouts, and reverse proxy buffering.
Open the full page for Why, Steps, Example and Key takeaway.
pip installs packages.
Open the full page for Why, Steps, Example and Key takeaway.
A string literal documenting a module, class, or function.
Open the full page for Why, Steps, Example and Key takeaway.
The Global Interpreter Lock allows only one thread to execute Python bytecode at a time in a process.
Open the full page for Why, Steps, Example and Key takeaway.
It memoizes pure functions with a size limit.
Open the full page for Why, Steps, Example and Key takeaway.
django-stubs, mypy, and careful QuerySet annotations.
Open the full page for Why, Steps, Example and Key takeaway.
Project tasks like migrate, runserver, and custom commands.
Open the full page for Why, Steps, Example and Key takeaway.
It locks rows inside a transaction to avoid race updates.
Open the full page for Why, Steps, Example and Key takeaway.
Index and value together without manual indexing.
Open the full page for Why, Steps, Example and Key takeaway.
When the sequence is fixed and you want immutability and hashability as a dict key.
Open the full page for Why, Steps, Example and Key takeaway.