6.15 Hands-on Exercises
Practice programs and mini projects for reinforcing Python variable and memory management concepts — UnboundLocalError, shallow vs deep …
Jan 20, 2026
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Memory-Management
17 articles
6.14 Interview Questions
Frequently asked and scenario-based Python interview questions covering references, shallow vs deep copy, UnboundLocalError, the LEGB rule, …
Jan 20, 2026
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6.13 Best Practices
Practical habits for writing memory-safe, readable Python — meaningful names, avoiding global state, using constants, and memory-efficient …
Jan 20, 2026
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6.12 Common Mistakes
The most common variable and memory-related bugs in Python — UnboundLocalError, shared mutable objects, variable shadowing, and assuming …
Jan 20, 2026
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6.11 Variables in DevOps
How configuration variables, environment variables, secrets, AWS credentials, and Terraform variables are managed in real DevOps Python …
Jan 20, 2026
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6.10 Variables in Functions
How Python passes arguments into functions, why mutable and immutable arguments behave differently when modified inside a function, and the …
Jan 20, 2026
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6.9 Lifetime of Variables
When a Python variable's lifetime begins and ends, how the del statement differs from letting a scope exit naturally, and how lifetime …
Jan 20, 2026
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6.8 Variable Scope
Local, global, and enclosing scope in Python, the global and nonlocal keywords, and the LEGB rule Python uses to resolve any name.
Jan 20, 2026
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6.7 Memory Optimization
CPython's automatic object-reuse optimizations — string interning and small integer caching — why they exist, and why they're implementation …
Jan 20, 2026
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6.6 Garbage Collection
How CPython's reference-counting memory manager works, why a supplementary cyclic garbage collector exists for reference cycles, and how to …
Jan 20, 2026
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6.5 Copying Objects
The difference between assignment, a shallow copy, and a deep copy in Python, when each is appropriate, and how the copy module's copy() and …
Jan 20, 2026
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6.4 Assignment Operations
Why all assignment in Python is reference assignment, why there's no true separate value-assignment mechanism, and how that plays out …
Jan 20, 2026
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6.3 Memory Management: Stack vs Heap
How CPython splits memory between the call stack (frame references) and the heap (actual object data), and why that split explains reference …
Jan 20, 2026
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6.2 Objects and Variable References
Why a Python variable is a label pointing at an object rather than a box holding a value, what that means for reference assignment, and why …
Jan 20, 2026
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6.1 Introduction to Variables
What a variable really is underneath the syntax, why that matters for memory behavior, and a map of the deeper reference, memory, and scope …
Jan 20, 2026
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Python Service Crashing with OOM in Kubernetes
Diagnose and fix a Python service being OOM-killed in Kubernetes by profiling memory growth and switching to streaming JSON parsing.
Jan 20, 2025
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Memory Leak in a Long-Running Python Service
Diagnose and fix unbounded memory growth in a Python microservice using tracemalloc, replacing an unbounded module-level set with Redis TTL …
Jan 20, 2025
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