将txt文件中的特定行复制到一个新的txt文件中。

Question

我在和蟒蛇一起工作。

我有一个.txt文件：

Data = 10,
Time taken = 2s,
Architecture = Microcontroller,
Speed = 1s,
Device = STC12C,

我只想复制到新的txt文件中：

Architecture = Microcontroller,
Device = STC12C,

Answer 1

# filepath is the path of the file you are reading
# for example filepath = r"C:\Users\joe\folder\txt_file.txt"
f = open(filepath, "r")
Lines=f.readlines() #here you have a list of all the lines
new_text = Lines[2] + Lines[4]

如果你打印new_text，你会得到：

>>> 
Architecture = Microcontroller,
Device = STC12C,

这就是我们想要的。现在将其保存到一个新文件中。

# filepath if the path of the file you want to create 
# for example filepath = r"C:\Users\joe\folder\new_txt_file.txt"
text_file = open(newfilepath, "w")
 
#write string to file
text_file.write(new_text)
 
#close file
text_file.close()

f.close() # I forgot to close the first file

编辑:通过使用with open，您不需要像@CrazyChucky所提到的那样关闭文件。

with open(filepath, 'r') as f:
    Lines=f.readlines()
new_text = Lines[2] + Lines[4]

with open(newfilepath, 'w') as f:
    f.write(new_text)