1.picking unpicking.
import pickle pickle_file = open('city_date.pkl','wb') pickle.dump(city,pickle_file) pickle_file.close()
improt pickle pickle_file = open('city_date.pkl','rb') city=pickle.load(pickle_file)
try: 检测范围 except Exception[as reason]: 出现异常(Exception)后的处理代码 finally: 无论如何都会被执行的代码 try: f=open('我为什么是一个文件.txt') print(f.read()) f.close() except OSError as reason: print('文件出错啦\n错误的原因是:'+str(reason))
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