Question

我想要搜索＆＃39; banana＆＃39; word并替换文件中的行

例如

的test.txt

＆＃34;测试测试苹果tt estsetse setse tse banana tes test setset orange sets et setset 设置etst＆＃34;

搜索＆＃39; banana＆＃39;并改变行

＆＃39;设置香蕉测试＆＃39; - ＆gt;我喜欢香蕉＆＃39;

Answer 1

这很简单......

请考虑此代码......

fp = open('D://source.txt',"r+")

fg = open('D://target.txt',"w")

for line in fp:

    if line.find("banana") != -1:
        new_line = line.replace(line,"i like banana\n")
        fg.write(new_line)

    else:
        fg.write(line)

fg.close()

fp.close()

Answer 2

您也可以使用此示例：

lookup = 'banana'
with open(text.txt) as myFile:
  for num, line in enumerate(myFile, 1):
    if lookup in line:
       # do some work
       break # if the work is finished
    elif not lookup in line:
       # do smtg else
       pass
myFile.close()

Python在文件中找到单词并替换行

2 个答案: