python - 当我尝试在 linux 中使用 f.open python 更改它们时，内容会重复

Question

我的代码是这种格式

#!/usr/bin/python

fout = open("names2", "w")
fin = open("names", "r")

for line in fin:
   fout.write(line.replace('Smith','Mr.Smith'))
   fout.write(line.replace('Walker','Mr.Walker'))

fout.close()

我的示例文件是

Smith           Anderson        Clark           Wright          Mitchell
Johnson         Thomas          Rodriguez       Lopez           Perez
Williams        Jackson         Lewis           Hill            Roberts
Jones           White           Lee             Scott           Turner
Brown           Harris          Walker          Green           Phillips
Davis           Martin          Hall            Adams           Campbell
Miller          Thompson        Allen           Baker           Parker
Wilson          Garcia          Young           Gonzalez        Evans
Moore           Martinez        Hernandez       Nelson          Edwards
Taylor          Robinson        King            Carter          Collins

不是让 Smith 由​​ Mr.Walker 改为 Mr.Smith 和 Walker，而是我得到

Mr.Smith                Anderson        Clark           Wright          Mitchell
Smith           Anderson        Clark           Wright          Mitchell
Johnson         Thomas          Rodriguez       Lopez           Perez
Johnson         Thomas          Rodriguez       Lopez           Perez
Williams        Jackson         Lewis           Hill            Roberts
Williams        Jackson         Lewis           Hill            Roberts
Jones           White           Lee             Scott           Turner
Jones           White           Lee             Scott           Turner
Brown           Harris          Walker          Green           Phillips
Brown           Harris          Mr.Walker               Green           Phillips
Davis           Martin          Hall            Adams           Campbell
Davis           Martin          Hall            Adams           Campbell
Miller          Thompson        Allen           Baker           Parker
Miller          Thompson        Allen           Baker           Parker
Wilson          Garcia          Young           Gonzalez        Evans
Wilson          Garcia          Young           Gonzalez        Evans
Moore           Martinez        Hernandez       Nelson          Edwards
Moore           Martinez        Hernandez       Nelson          Edwards
Taylor          Robinson        King            Carter          Collins
Taylor          Robinson        King            Carter          Collins

这意味着对于每个 for，文件都会创建一个额外的实例并且行会重复，这是我不希望发生的。我有解决办法吗？我有 Python 2.4.3。谢谢!

Answer 1

那是因为你把这行写了两次。

将循环更改为:

for line in fin:
    line = line.replace('Smith','Mr.Smith')
    line = line.replace('Walker','Mr.Walker')
    fout.write(line)