关于python文件的读取创建写入

import osprint(os.getcwd())f=open(r'D:\练习存放\date.txt')os.mkdir(r'D:\练习存放2')os.chdir(r'D:\练习存放2')os.getcwd()first=open('first.txt','w',encoding='utf8')first.write('超级赛亚人蓝色')names=['tom','tim']names_1=[name+'\n' for name in names]first.writelines(names)first.writelines(names_1)first.flush()#原本不关闭无法看到写入的元素，但使用flush可以先将缓存写入硬盘first.close()#open('路径'，'模式'，encoding='编码')打开文件，创建文件,r读取，w写入，rw读取并写入，a追加（append），*b二进制(这个是字节的形式操作)f.read()#读取文件.read(N)一次性读取多少字节或者自负print(f.read()+'a')f.seek(0)#.seek(n)------移动鼠标位置print(f.read())f.close()#.close()关闭文件连接a=open(r'D:\练习存放\date.txt')print(a.read(4))print(a.read(4))print(a.read(4))'''输出a啦啦啦德玛西亚德玛西亚德玛啦啦啦德玛西亚德玛西亚'''a.seek(0)l=a.readlines()#.readlines()读取行到列表m=a.readline()#.readline()读取下一行print(m)print(l)with open('first.txt','rw',encoding='utf8') as first:    first.write('hello\n')    print(first.read())