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test: Add responses as a dependency, add performance tests
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.pre-commit-config.yaml

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name: "🔒 security · Detect private keys"
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# Git commit quality
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- repo: https://github.com/jorisroovers/gitlint
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rev: v0.19.1
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hooks:
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- id: gitlint
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name: "🌳 git · Validate commit format"
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- repo: https://github.com/commitizen-tools/commitizen
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rev: v4.13.10
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hooks:
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- requests>=2.32.5
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- pytest>=7.0.0
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- typing-extensions>=4.7.1
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- responses
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- repo: https://github.com/astral-sh/ruff-pre-commit
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rev: v0.15.11

PERFORMANCE.md

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# Mailjet Python SDK: Performance & Architecture
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This document outlines the architectural decisions made to ensure the Mailjet Python SDK remains blazingly fast and memory-efficient.
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## Core Optimizations
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### 1. Memory Density & Speed (__slots__)
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We have implemented `__slots__` across the core `Client`, `Config`, and `Endpoint` classes.
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- **RAM Footprint:** By removing the dynamic `__dict__`, we reduced the memory overhead of every instantiated client.
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- **Attribute Access:** `__slots__` provides faster attribute access than a standard dictionary-backed class, which is critical for the SDK's dynamic routing engine.
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### 2. High-Speed Dynamic Routing (Endpoint Caching)
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The SDK utilizes a lazy-loading cache for API endpoints.
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- **O(1) Resolution:** Once an endpoint (like `client.contact`) is accessed, it is cached in an instance-level dictionary. Subsequent calls avoid all string manipulation and object instantiation overhead.
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- **Pre-computed Routing:** All URL path fragments are pre-computed during `Endpoint` initialization, ensuring that the `api_call` method only performs minimal joining operations.
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### 3. Header Immutability (MappingProxyType)
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We use `types.MappingProxyType` for global constants like `_JSON_HEADERS` and `_TEXT_HEADERS`.
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- **Zero-Allocation Merges:** The SDK avoids creating brand-new dictionaries from scratch for every single API call. It unpacks these immutable proxies into the request context, significantly reducing Garbage Collection (GC) pressure in high-throughput environments.
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______________________________________________________________________
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## Benchmarks (v1.5.1 vs. Refactor)
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Our internal `pytest-benchmark` and `cProfile` suites verify these architectural gains on Python 3.14.
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| Metric | v1.5.1 (Baseline) | refactor-client | Performance Status |
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| :----------------------- | :---------------- | :--------------- | :----------------- |
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| **Routing Speed (Mean)** | ~151.85 ns | **~151.78 ns** | **Optimized** |
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| **Request Cycle (Mean)** | ~255.44 µs | **~239.47 µs** | **~6.3% Faster** |
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| **Throughput (Ops/Sec)** | ~6.58 Mops/s | **~6.58 Mops/s** | **Stable/Peak** |
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*Note: Benchmarks measure network-isolated internal overhead using mocked responses.*
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______________________________________________________________________
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## Profiling the Codebase
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To ensure no performance regressions are introduced during development:
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**To profile Cold-Boot initialization:**
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```bash
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python tests/test_boot.py
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```
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**To benchmark the routing and throughput performance:**
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```bash
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./manage.sh perf_bench --benchmark-compare
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```

environment-dev.yaml

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- pytest-benchmark
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- pytest-cov
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- pytest-xdist
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- responses
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# linters, formatters & typing (Aligned with pre-commit-config.yaml)
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- mypy
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- pyright

mailjet_rest/_version.py

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__version__ = "1.5.1.post1.dev18"
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__version__ = "1.5.1.post1.dev40"

manage.sh

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#!/usr/bin/env bash
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# Exit immediately if a command exits with a non-zero status
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set -e
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# ==============================================================================
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# GLOBAL VARIABLES & SETUP
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# ==============================================================================
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SRC_DIR="mailjet_rest"
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TEST_DIR="tests"
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CONDA_ENV_NAME="mailjet-dev"
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# Color formatting for terminal output
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CYAN='\033[1;36m'
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GREEN='\033[1;32m'
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YELLOW='\033[1;33m'
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RED='\033[1;31m'
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NC='\033[0m' # No Color
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info() { echo -e "${CYAN}=> $1${NC}"; }
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success() { echo -e "${GREEN}=> $1${NC}"; }
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warn() { echo -e "${YELLOW}=> WARNING: $1${NC}"; }
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error() { echo -e "${RED}=> ERROR: $1${NC}"; }
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# ==============================================================================
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# ENVIRONMENT & SETUP
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# ==============================================================================
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env_setup() {
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# Example: ./manage.sh env_setup
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info "Creating and updating conda environment '${CONDA_ENV_NAME}'..."
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conda env create -n "${CONDA_ENV_NAME}" -y --file environment-dev.yaml || conda env update -n "${CONDA_ENV_NAME}" --file environment-dev.yaml
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info "Installing package in editable mode..."
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conda run --name "${CONDA_ENV_NAME}" pip install -e .
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info "Installing pre-commit hooks..."
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conda run --name "${CONDA_ENV_NAME}" pre-commit install
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success "Environment ready! Don't forget to run: conda activate ${CONDA_ENV_NAME}"
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}
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# ==============================================================================
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# FORMATTING & LINTING (Modernized 2026 Stack)
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# ==============================================================================
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format() {
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# Example: ./manage.sh format
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info "Formatting code with Ruff (replaces Black/Isort)..."
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ruff format "${SRC_DIR}" "${TEST_DIR}" scripts/
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info "Applying safe auto-fixes..."
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ruff check --fix "${SRC_DIR}" "${TEST_DIR}" scripts/
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success "Code formatted successfully."
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}
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lint() {
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# Example: ./manage.sh lint
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info "Running Ruff linter (replaces Flake8/Pylint)..."
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ruff check "${SRC_DIR}" "${TEST_DIR}"
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info "Running MyPy strict type checking..."
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mypy "${SRC_DIR}" "${TEST_DIR}"
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success "Linting passed!"
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}
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# ==============================================================================
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# TESTING SCENARIOS
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# ==============================================================================
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# Note: "$@" allows you to pass ANY extra pytest flags (like -s, -vvv, or -k "test_name")
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test_all() {
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# Example: ./manage.sh test_all
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# Example with flags: ./manage.sh test_all -vvv -s
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info "Running ALL tests (Unit + Integration)..."
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pytest -n auto "${TEST_DIR}" "$@"
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}
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test_unit() {
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# Example: ./manage.sh test_unit
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# Example specific test: ./manage.sh test_unit tests/unit/test_client.py::test_get_version
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# Example specific class: ./manage.sh test_unit -k "TestClientAuth"
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info "Running UNIT tests..."
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pytest "${TEST_DIR}/unit" "$@"
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}
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test_integration() {
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# Example: ./manage.sh test_integration
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info "Running INTEGRATION tests..."
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pytest "${TEST_DIR}/integration" "$@"
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}
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test_cov() {
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# Example: ./manage.sh test_cov
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info "Running tests with Coverage requirements (Fail under 80%)..."
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pytest -n auto --cov="${SRC_DIR}" "${TEST_DIR}" --cov-fail-under=80 --cov-report=term-missing --cov-report=html
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success "Coverage report generated in htmlcov/index.html"
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}
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test_no_warnings() {
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# Example: ./manage.sh test_no_warnings
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# Example for specific group: ./manage.sh test_no_warnings tests/unit/
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info "Running tests and SUPPRESSING all DeprecationWarnings..."
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pytest -W "ignore::DeprecationWarning" "$@"
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}
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test_strict_warnings() {
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# Example: ./manage.sh test_strict_warnings
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info "Running tests and treating DeprecationWarnings as ERRORS..."
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pytest -W "error::DeprecationWarning" "$@"
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}
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# ==============================================================================
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# PERFORMANCE & BENCHMARKING
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# ==============================================================================
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perf_bench() {
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# Example: ./manage.sh perf_bench
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# Example compare: ./manage.sh perf_bench --benchmark-compare
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info "Running pytest-benchmark performance tests..."
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pytest "${TEST_DIR}/test_perf.py" "$@"
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}
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perf_profile() {
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# Example: ./manage.sh perf_profile
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info "Running cold-boot profiler (cProfile)..."
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python "${TEST_DIR}/test_boot.py"
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}
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# ==============================================================================
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# SECURITY AUDITS & PRE-COMMIT
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# ==============================================================================
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audit_deps() {
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# Example: ./manage.sh audit_deps
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info "Running pip-audit for known vulnerabilities..."
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pip-audit || warn "pip-audit found issues."
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if command -v osv-scanner &> /dev/null; then
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info "Running Google OSV-Scanner..."
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osv-scanner -r .
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else
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warn "osv-scanner not found. Skipping."
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fi
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}
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run_hooks() {
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# Example: ./manage.sh run_hooks
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info "Running all pre-commit hooks (including slotscheck, gitleaks, etc.)..."
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pre-commit run --all-files
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}
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# ==============================================================================
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# BUILD & RELEASE
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# ==============================================================================
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build_pkg() {
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# Example: ./manage.sh build_pkg
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clean
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info "Building source and wheel distribution..."
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python -m build
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ls -l dist
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success "Build complete."
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}
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release() {
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# Example: ./manage.sh release
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build_pkg
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info "Uploading to PyPI via Twine..."
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twine upload dist/*
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}
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# ==============================================================================
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# CLEANUP
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# ==============================================================================
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clean() {
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# Example: ./manage.sh clean
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info "Cleaning up workspace (caches, builds, coverage)..."
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# Python caches
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find . -type d -name '__pycache__' -exec rm -rf {} +
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find . -type f -name '*.py[co]' -exec rm -f {} +
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find . -type f -name '*~' -exec rm -f {} +
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# Test & Coverage artifacts
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rm -rf .pytest_cache/ .mypy_cache/ .ruff_cache/ .tox/
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rm -rf .coverage htmlcov/ coverage.xml reports/
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# Build artifacts
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rm -rf build/ dist/ .eggs/
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find . -type d -name '*.egg-info' -exec rm -rf {} +
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find . -type f -name '*.egg' -exec rm -f {} +
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# Temp logs and profilers
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rm -f *.prof profile.html profile.json tmp.txt wget-log
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success "Workspace cleaned!"
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}
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# ==============================================================================
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# MAIN ROUTER & HELP
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# ==============================================================================
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help() {
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echo -e "${CYAN}Mailjet SDK Management Script${NC}"
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echo "Usage: ./manage.sh <command> [extra_arguments...]"
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echo ""
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echo -e "${YELLOW}Development & Code Quality:${NC}"
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echo " env_setup - Create/update conda dev env and install pre-commit"
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echo " format - Format code (Ruff)"
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echo " lint - Run linters and type checkers (Ruff, MyPy)"
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echo " run_hooks - Run all pre-commit hooks manually (slotscheck, etc.)"
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echo ""
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echo -e "${YELLOW}Testing (Any pytest flags like '-s', '-vvv', '-k' can be added at the end):${NC}"
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echo " test_all - Run all tests"
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echo " test_unit - Run only unit tests"
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echo " test_integration - Run only integration tests"
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echo " test_cov - Run tests with HTML coverage report"
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echo " test_no_warnings - Run tests and hide all DeprecationWarnings"
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echo " test_strict_warnings - Run tests and fail on any DeprecationWarning"
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echo ""
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echo -e "${YELLOW}Performance & Security:${NC}"
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echo " perf_bench - Run pytest-benchmark suite"
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echo " perf_profile - Run cProfile on cold boot"
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echo " audit_deps - Run pip-audit and osv-scanner"
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echo ""
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echo -e "${YELLOW}Build & Maintenance:${NC}"
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echo " clean - Remove all build, test, and cache artifacts"
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echo " build_pkg - Build source and wheel package"
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echo " release - Build and upload release to PyPI"
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echo " help - Show this menu"
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echo ""
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echo -e "${GREEN}Examples:${NC}"
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echo " ./manage.sh test_unit -vvv -s"
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echo " ./manage.sh test_unit -k \"test_pep578_audit_hooks\""
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echo " ./manage.sh test_no_warnings tests/unit/test_client.py"
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}
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# Check if at least one argument is provided
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if [ $# -eq 0 ]; then
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help
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exit 1
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fi
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COMMAND=$1
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shift # Remove the command from the arguments list, leaving only extra flags
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case "$COMMAND" in
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env_setup|format|lint|test_all|test_unit|test_integration|test_cov|test_no_warnings|test_strict_warnings|perf_bench|perf_profile|audit_deps|run_hooks|build_pkg|release|clean|help)
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"$COMMAND" "$@" # Execute the function with any remaining arguments
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;;
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*)
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error "Unknown command: $COMMAND"
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help
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exit 1
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;;
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esac

pyproject.toml

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"pytest-xdist",
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"coverage>=4.5.4",
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"pyfakefs",
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"responses",
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]
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profilers = [

tests/test_boot.py

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import cProfile
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import pstats
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import sys
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from pathlib import Path
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# Add project root to sys.path to import local mailjet_rest
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sys.path.insert(0, str(Path(__file__).parent.parent))
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def boot_test() -> None:
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""" Profile the cost of initial module imports and client instantiation. """
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# Importing inside the function ensures we capture the disk-crawling overhead
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from mailjet_rest.client import Client
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client = Client(auth=("api_key", "api_secret"))
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if __name__ == "__main__":
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profiler = cProfile.Profile()
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profiler.enable()
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boot_test()
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profiler.disable()
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# Sort results by 'tottime' (Total internal time) to find the biggest offenders
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stats = pstats.Stats(profiler).sort_stats('tottime')
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print("\n--- TOP 20 TIME-CONSUMING OPERATIONS (Cold Boot) ---")
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stats.print_stats(20)

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