写文件

# 注意在w模式下 一旦打开文件 立即清空原来的内容 如果文件不存在则创建新文件
# 写入字符串时需要手动拼接换行符
with open(r"D:\sh_fullstack_s6\day8\代码\test.txt",mode="w",encoding="utf-8") as f:
    # f.write("爱根\n")
    print(f.writable())
    # f.writelines("\n".join(["abc","cba","nba"]))
    f.writelines({"name":"bgon","age":20})          #字典只会写入键的值
    # pass