# ────────── Core ──────────────────
numpy>=1.26,<1.28       # Py3.10 호환 최상위
pandas>=2.2,<2.3
scipy>=1.11,<1.16
statsmodels>=0.14,<0.15

# ────────── Forecasting ───────────
prophet==1.1.5          # Py3.10 + cmdstanpy backend
cmdstanpy>=1.1,<1.2     # prophet 내부 호출

# ────────── App & Viz ─────────────
streamlit>=1.33,<2.0
plotly>=5.20,<6.0
seaborn>=0.13,<0.14
matplotlib>=3.8,<3.9
pyarrow>=14.0           # Parquet I/O

statsmodels 
scikit-learn