[英]Concat/Append to the end of a specific line of text file in Python
我需要在文本文件中特定行的末尾添加一些文本。 我目前正在尝试使用与此类似的方法:
entryList = [5,4,3,8]
dataFile = open("file.txt","a+)
for i in dataFile:
for j in entryList:
lines[i] = lines[i].strip()+entryList[j]+" "
dataFile.write(lines[i])
我想在文字后面立即加上数字。
文本文件设置:
it is
earlier it was
before that it was
later it will be
您在问题中提到了特定的行,并且在代码中为每一行编写代码。
import fileinput
entryList = [5,4,3,8]
count = 0
for line in fileinput.FileInput('data.txt',inplace=1): print line+str(entryList[count])+" " count+=1
从同一文件读取然后再写入不是一个好主意。 我建议根据需要打开它:
entryList = [5,4,3,8]
with open("file.txt", "r") as dataFile:
# You may want to add '\n' at the end of the format string
lines = ["{} {} ".format(s.strip(), i) for s,i in zip(dataFile, entryList)]
with open("file.txt", "w") as outFile:
outFile.writelines(lines)
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