使用特定位置将文本从一个文件移动到另一个文件 python

Question

我想将文本文件的特定部分（使用特殊字符串，例如#）移动到另一个文件。喜欢：Similar Solution。我的问题是我还想在输出文件中指定目的地。

例如

我有一个文本文件，其中一段以#1 开头，一些行以#2 结尾

FIle1.txt

hello
a
b
#1
a
b
#2
c

我有另一个文件（不是 txt，而是 markdown），如下所示：

File2

header
a
b
#1

#2 
d

我想将特殊字符（#1 和#2）内的文本从第一个文件移动到第二个文件中。结果：

File2

header
a
b
#1
a
b
#2 
d

Answer 1

IIUC，你想要：

with open("file1.txt") as f:
    f1 = [line.strip() for line in f]
    
with open("file2.md") as f:
    f2 = [line.strip() for line in f]

output = f2[:f2.index("#1")]+f1[f1.index("#1"):f1.index("#2")]+f2[f2.index("#2"):]
with open("output.md", "w") as f:
    f.write("\n".join(output))

Answer 2

我写了一个不太pythonic的例子，如果你有更多的锚点，它更容易修改。它使用了一个非常简单的状态机。

to_copy = ""

copy_state = False

with  open("file1.txt") as f:
    for el in f:
        
        # update state. We need to leave copy state before finding end symbol
        if copy_state and "#2" in el: 
            copy_state = False
        
        if copy_state:
            to_copy += el
        
        # update state. We need to enter copy state after finding end symbol
        if not copy_state and "#1" in el:
            copy_state = True
#debug       
print(to_copy)

output = ""

with open("file2.txt") as fc:
    with open("file_merge.txt","w") as fm:
                
        for el in fc:
            
            #copy file 2 into file_merge
            output += el    
        
            #pretty much the same logic
            
            # update state. We need to leave copy state before finding end symbol
            if copy_state and "#2" in el: 
                copy_state = False
            
                
            
            # update state. We need to enter copy state after finding end symbol
            if not copy_state and "#1" in el:
                copy_state = True
            
                # if detected start copy, attach what you want to copy from file1
                output += to_copy
                
                
        fm.write(output)
    
#debug    
print(output)

使用特定位置将文本从一个文件移动到另一个文件 python

Move text from one file to another using specific positions python

python

markdown

parsing

text

txt