标签:lines nal final muti lease 二进制 ESS 现在 rem
现在做CV又要开始用Python了,复习一下Python怎么读写文件23333
读文件
fin=open('<the address of file>','r')
#read the whole file
theWholeFile=fin.read()
#read a line
aLine=fin.readline()
fin.close()
如果要按字节读的话:
fin=open('<the address of file>','rb')
try:
while True:
certainBytes=fin.read(20)#read 20 Bytes one time
if not certainBytes:#如果读完了的话
break
finally:
fin.close()
写文件
fout=open("<the address of file>",'w')
#wirte the whole text
fout.write(theWholeText)#remember if you want to write mutiple lines,please add \n by yourself
#write mutiple lines
fout.writelines(theListofLines)
#theListofLines looks like this:
#theListofLines = ["This is 6th line\n", "This is 7th line"]
fout.close()
写文件时候没有writeline方法,其实write手动在末尾加上换行符的话就是writeline,或者writekines的列表中只有一个元素也是
? 如果要追加写的话:
fout=open("<the address of file>",'w+')
如果要写二进制文件的话:
fout=open("<the address of file>",'wb')
标签:lines nal final muti lease 二进制 ESS 现在 rem
原文地址:https://www.cnblogs.com/jiading/p/11965330.html