在 python 中搜索特定单词后，将文本单词附加到文本文件中

Question

我想读取一个文本文件，想要一个特定的单词，然后想在它旁边附加一些其他单词。

例如：

我想在像约翰这样的文件中找到名字，然后想像约翰史密斯一样用"约翰"附加姓氏。

这是我到目前为止编写的代码。

usrinp = input("Enter name: ")
lines = []
with open('names.txt','rt') as in_file:
for line in in_file:
lines.append(line.rstrip('n'))

for element in lines:
if usrinp in element is not -1:
print(lines[0]+" Smith")
print(element)

这就是文本文件的样子：

My name is FirstName
My name is FirstName
My name is FirstName
FirstName is a asp developer
Java developer is FirstName
FirstName is a python developer

Answer 1

使用replace是实现此目的的一种方法。

输入文件(名称.txt(：

My name is John
My name is John
My name is John
John is a asp developer
Java developer is John
John is a python developer

脚本：

name = 'John'
last_name = 'Smith'
with open('names.txt','r') as names_file:
content = names_file.read()
new = content.replace(name, ' '.join([name, last_name]))
with open('new_names.txt','w') as new_names_file:
new_names_file.write(new)

输出文件 (new_names.txt(：

My name is John Smith
My name is John Smith
My name is John Smith
John Smith is a asp developer
Java developer is John Smith
John Smith is a python developer

Answer 2

search_string = 'john'
file_content = open(file_path,'r+')
lines = []
flag = 0
for line in file_content:
line = line.lower()
stripped_line = line
if search_string in line:
flag = 1
stripped_line = line.strip('n')+' '+'smith n'    
lines.append(stripped_line)
file_content.close()
if(flag == 1):
file_content = open(file_path,'w')
file_content.writelines(lines)
file_content.close()
**OUTPUT**
My name is FirstName
My name is FirstName
My name is FirstName
FirstName is a asp developer
Java developer is john smith
FirstName is a developer