Delete Newline / Return Carriage In File Output

I have a wordlist that contains returns to separate each new letter. Is there a way to programatically delete each of these returns using file I/O in Python? Edit: I know how to

Solution 1:

>>>string = "testing\n">>>string
'testing\n'
>>>string = string[:-1]>>>string
'testing'

This basically says "chop off the last thing in the string" The : is the "slice" operator. It would be a good idea to read up on how it works as it is very useful.

EDIT

I just read your updated question. I think I understand now. You have a file, like this:

aqua:test$ cat wordlist.txt 
Testing

This

Wordlist

WithReturnsBetween

Lines

and you want to get rid of the empty lines. Instead of modifying the file while you're reading from it, create a new file that you can write the non-empty lines from the old file into, like so:

# script    
rf = open("wordlist.txt")
wf = open("newwordlist.txt","w")
for line in rf:
    newline = line.rstrip('\r\n')
    wf.write(newline)
    wf.write('\n')  # remove to leave out line breaks
rf.close()
wf.close()

You should get:

aqua:test$ cat newwordlist.txt 
Testing
This
Wordlist
WithReturnsBetween
Lines

If you want something like

TestingThisWordlistWithReturnsBetweenLines

just comment out

wf.write('\n')

Solution 2:

You can use a string's rstrip method to remove the newline characters from a string.

>>>'something\n'.rstrip('\r\n')>>>'something'

Solution 3:

The most efficient is to not specify a strip value

'\nsomething\n'.split() will strip all special characters and whitespace from the string

Solution 4:

simply use, it solves the issue.

   string.strip("\r\n")

Solution 5:

Remove empty lines in the file:

#!/usr/bin/env pythonimport fileinput

for line in fileinput.input("wordlist.txt", inplace=True):
    if line != '\n':
       print line,

The file is moved to a backup file and standard output is directed to the input file.