[英]Append text in every line of txt in Python
I've a text file with many lines. 我有一个包含多行的文本文件。 I need to append to every line a text in Python.
我需要在Python的每一行后面附加一个文本。
Here an example: 这里是一个例子:
Text before: 之前的文字:
car
house
blog
Text modified: 文字已修改:
car: [word]
house: [word]
blog: [word]
If you just want to append word
on each line this works fine 如果您只想在每行上附加
word
,则效果很好
file_name = 'YOUR_FILE_NAME.txt' #Put here your file
with open(file_name,'r') as fnr:
text = fnr.readlines()
text = "".join([line.strip() + ': [word]\n' for line in text])
with open(file_name,'w') as fnw:
fnw.write(text)
But there are many ways to do it 但是有很多方法可以做到
Read the text in a list: 阅读列表中的文本:
f = open("filename.dat")
lines = f.readlines()
f.close()
append text: 附加文字:
new_lines = [x.strip() + "text_to_append" for x in lines]
# removes newlines from the elements of the list, appends
# the text for each element of the list in a list comprehension
Edit: for completness, a more pythonic solution with writing the text to a new file: 编辑:为了完整起见,将文本写入新文件的更多pythonic解决方案:
with open('filename.dat') as f:
lines = f.readlines()
new_lines = [''.join([x.strip(), text_to_append, '\n']) for x in lines]
with open('filename_new.dat', 'w') as f:
f.writelines(new_lines)
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