python操作文件模式的介绍

f = open('my_file.txt', 'rb')

f_bytes = f.read()

print(f_bytes)

print(f_bytes.decode('utf-8'))

f.close()

write_file = open('demo1.jpg', mode='wb')

read_file = open('demo.jpg', mode='rb')

write_file.write(read_file.read())

read_file.close()

write_file.close()

read_write_file = open('append_file.txt', mode='r+', encoding='utf-8')

print(read_write_file.read())

read_write_file.write('\n努力向上,天天向上')

print(read_write_file.read())

read_write_file.close()