制造业 批次可追溯性 代理

import pandas as pd
from datetime import datetime

def trace_batch(batch_id, production_log):
    steps = []
    for record in production_log:
        if record['batch_id'] == batch_id:
            steps.append(record)
    return pd.DataFrame(steps)

def map_materials(batch_id, bom, inventory):
    materials = []
    for mat in bom[batch_id]:
        materials.append({
            'material': mat,
            'source': inventory[mat]['supplier'],
            'lot': inventory[mat]['lot_no']
        })
    return materials

# Generate traceability report