Table of Contents
Introduction
The task is to reverse the single line of text of the given text file and update it in the same file.
Program
readFile = open('contentFile.txt', 'r')
row = readFile.readlines()
readFile.close()
selectRow = 0
tmp = row[selectRow].split()
strRev = " ".join(tmp[::-1])
row.pop(selectRow)
row.insert(selectRow, strRev)
writeFile = open('contentFile.txt', 'w')
writeFile.writelines(row)
writeFile.close()
Output
Explanation
Approach:
- Open the content file in read mode and output file in write mode.
- Split the line of text into words and store it into a variable. (Here we are reversing line 2)
- Reverse the contents of the variable.
- Pop the content of line 2.
- Insert the reversed content at line 2.
- Write the updated content in the output file.
- Close files.
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