一、读写txt

模式：

with open('药品数据.txt','r',encoding='utf-8') as f:
    reads = f.readlines()
    for i in reads:
        data=i.strip().split()
        print(data)

with open('药品数据.txt', 'w', encoding='utf-8') as f:
    f.write("这是要写入的字符串\n")