Table of Contents
Introduction
The task is to copy the odd lines text to another file.
Program
readFile = open("first.txt", "r")
writeFile = open("updated.txt", "w")
lines = readFile.readlines()
type(lines)
for idx in range(0, len(lines)):
#check for odd lines
if(idx % 2 != 0):
writeFile.write(lines[idx])
else:
pass
writeFile.close()
readFile.close()
writeFile = open("updated.txt", "r")
lines1 = writeFile.read()
print(lines1)
writeFile.close()Output
Explanation
Approach:
- Open the text files in read mode and empty text file in write mode.
- Read the lines of text file and assign to a variable.
- Traverse through all the lines in range(0, len(lines)) and check whether the idx is divisible by 2.
- If idx is not divisible by 2, write the content of line to another file else if it is divisible the skip and move to next idx.
- Close the files.
- Open the file and read its content. Print the content on screen.
- Close the file.
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