[英]How can i add string at the beginning each line?
I need to add at beginning of each line id from a list five times.我需要在列表中每行 id 的开头添加五次。 file_id
like file_id
喜欢
5
8
6
9
text_file
like text_file
喜欢
pla pla pla
text text text
dsfdfdfdfd
klfdklfkdkf
poepwoepwo
lewepwlew
the result should be结果应该是
5 pla pla pla
5 text text text
5 dsfdfdfdfd
5 klfdklfkdkf
5 poepwoepwo
8 lewepwlew
and so on .. the number of ids equals 5000 ids and text equals 25000 sentences .. every id will be with five sentences.依此类推.. id 的数量等于 5000 个 id,文本等于 25000 个句子 .. 每个 id 将包含五个句子。 i tried to do something like that我试图做这样的事情
import fileinput
import sys
f = open("id","r")
List=[]
for id in f.readlines():
List.append(id)
file_name = 'text.txt'
with open(file_name,'r') as fnr:
text = fnr.readlines()
i=0
text = "".join([List[i]+" " + line.rstrip() for line in text])
with open(file_name,'w') as fnw:
fnw.write(text)
but got results但得到了结果
5
pla pla pla5
text text text5
dsfdfdfdfd5
klfdklfkdkf5
poepwoepwo5
lewepwlew5
Instead of:代替:
i=0
text = "".join([List[i]+" " + line.rstrip() for line in text])
You can try:你可以试试:
new_text = []
for i, line in enumerate(text):
new_text.append(List[i % 5] + " " + line.rstrip())
And then write new_text
to the file.然后将new_text
写入文件。
you can try this: I haven't tested it yet though你可以试试这个:虽然我还没有测试过
lst = []
with open("id","r") as f:
ids = f.read().split('\n')
file_name = 'text.txt'
with open(file_name,'r') as fnr:
text = fnr.read().split('\n')
counter = 0
for id_num in ids:
for _ in range(5):
if counter >= len(text):
break
lst.append(id_num + " " + text[counter])
counter += 1
text = '\n'.join(lst)
with open(file_name,'w') as fnw:
fnw.write(text)
output:输出:
1 pla pla pla
1 text text text
1 dsfdfdfdfd
1 klfdklfkdkf
1 poepwoepwo
2 lewepwlew
2
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