第三周-第08章节-Python3.5-文件修改详解

# pcj
# 1、打开文件，
# 2、打开另外一个新文件，查找内容，替换，写入新文件
f=open("houze","r",encoding="utf-8")
f_new=open("houze_new","w",encoding="utf-8")
for line in f:
    if "我不想这样活着" in line:
        line=line.replace("我不想这样活着","我不想这样活着，加油，兄弟")   #.replace("old","new")
    f_new.write(line)
f.close()
f_new.close()

with语句。当忘记关闭文件时，程序结束后自动关闭

with open("houze_new","w",encoding="utf-8") as f:
　　for line in f:
　　print(line)