from flask import Flask from flask_bcs import BCS   BCS_HOST = 'BCS HOST' BCS_ACCESS_KEY = 'BCS Access Key' BCS_SECRET_KEY = 'BCS Secret Key' BCS_BUCKET_NAME = 'BCS Bucket Name'   app = Flask(__name__) app.config.from_object(__name__) bcs = BCS(app) # 或者 # bcs = BCS() # bcs.init_app(app)   # 保存文件到BCS @app.route('/save') def save():     data = 'data to save'     filename = 'filename'     allow_referers = ['http://*.duapp.com/*', 'http://zhangxc.com/*']     # 不设置allow_referers为完全public     ret = bcs.save(data, filename, allow_referers)     return str(ret)   # 删除BCS中的文件 @app.route('/delete') def delete():     filename = 'filename'     ret = bcs.delete(filename)     return str(ret)   # 根据文件名获取对应的公开URL @app.route('/url') def url():     filename = 'filename'     return bcs.url(filename)