Python:用多个输入替换文本文件中的多个字符串

Question

我正在考虑用用户的输入替换多个字符串。以下代码(这是对 stackoverflow 中的一个查询的代码的修改；请原谅，因为我再也找不到该线程了)在查找和替换指定字符串的一个实例(故意完成)时效果很好:

print('What word should we replace s1 with?')
input_1 = input()
with open('C:\\dummy1.txt')as f:
     sample1 = f.read().replace("s1", str(input_1), 1)
with open('C:\\dummy2.txt',"w") as f1:
     f1.write(sample1)

现在，当我尝试复制粘贴相同内容并修改它以适应其他字符串时，只有最后一个指定的字符串被替换......这是一个示例代码:

print('What word should we replace s1 with?')
input_1 = input()
with open('C:\\dummy1.txt')as f:
     sample1 = f.read().replace("s1", str(input_1), 1)
with open('C:\\dummy2.txt',"w") as f1:
     f1.write(sample1)

print('What word should we replace s2 with?')
input_2 = input()
with open('C:\\dummy1.txt')as f:
     sample2 = f.read().replace("s2", str(input_2), 1)
with open('C:\\dummy2.txt',"w") as f1:
     f1.write(sample2)

我需要做什么才能使多个字符串无缝工作？请考虑向具有不到一年编码经验和 9 小时 Python 视频学习经验的人解释它:) 谢谢!

Answer 1

这对我有用。

#using os to get path since py and txt file are in same folder
#just change your actual path if you need
import os
curdir=os.getcwd()
filepath=os.path.join(curdir,'the_file.txt')


print('What word should we replace s1 with?')
input_1 = input()
print('What word should we replace s2 with?')
input_2 = input()

sample1=''
sample2=''
with open(filepath, 'r')as f:
     sample1 = f.read().replace("s1", str(input_1), 1)
     sample2 = sample1.replace("s2", str(input_2), 1)
with open(filepath, 'w')as f:    
     f.write(sample2)

编辑:

此外，我刚刚意识到，您在获取输入和替换文本时两次都从 dummy1.txt 读取并写入 dummy2.txt。这就是仅更改 s2 的原因。更改 s2 时，您应该读取 dummy2.txt，因为该文件包含 s1 更改。在上面的示例中，我只是覆盖了我读取的文件，但如果您愿意，可以轻松更改。

    #using os to get path since py and txt file are in same folder
#just change your actual path if you need
import os
curdir=os.getcwd()
filepath=os.path.join(curdir,'the_file.txt')
filepath_2=os.path.join(curdir,'the_other_file.txt')


print('What word should we replace s1 with?')
input_1 = input()
print('What word should we replace s2 with?')
input_2 = input()

sample1=''
sample2=''
with open(filepath, 'r')as f:
     sample1 = f.read().replace("s1", str(input_1), 1)
     sample2 = sample1.replace("s2", str(input_2), 1)
with open(filepath_2, 'w')as f:    
     f.write(sample2)