Manufacturing Raw Material Planning Agent

import pandas as pd
from datetime import datetime

def calc_requirements(bom, schedule):
    req = {}
    for product, qty in schedule.items():
        for mat, per_unit in bom[product].items():
            req[mat] = req.get(mat, 0) + per_unit * qty
    return req

def check_stock(requirements, inventory):
    orders = {}
    for mat, needed in requirements.items():
        available = inventory.get(mat, 0)
        if needed > available:
            orders[mat] = needed - available
    return orders

# Generate material plan