How to remove whitespace from a string when .replace and .strip do not work

[winnetrie]

I have a python server and when i ask the client the login name to check it is valid with the 1 in the database, for some reason there is always a whitespace at the end of the string. I already tried this:

1 2 3 4 5

newstring = oldstring.replace(' ', '')    #not working, white space is still there newstring = oldstring.strip()  # also not working, whitespace is still there   #i also tried: newstring = oldstring.replace('\n\t\r\s\f', '')    #not working, white space is still there

Here is a code snippet from the server:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

client_loggedin = False             while client_loggedin == False:                 accountName = conn.recv(1024).decode("utf_8")                 print(accountName + " = " + str(len(accountName)))                   db = pymysql.connect("XXXXXXXXXXXXXsecretXXXXXXXXXX")                 cursor = db.cursor()                 cursor.execute("SELECT `XXXXXXXXXXXXX` FROM `XXXXXXXXXXXXX` WHERE `XXXXXXXXXXXXX`=%s", accountName)                 dataraw = cursor.fetchone()                 data = dataraw[0]                 db.close()                 if str(accountName) != str(data):                       print (str(data) + "+" + str(accountName))                     print("datalengte: " + str(len(data)) + " en " + "accountNamelengte: " + str(len(accountName)))                     print ("Deze gebruiker bestaat niet")                 elif accountName == data:                     reply = "Welcome " + str(accountName)                     conn.sendall(reply.encode("utf_8"))                     client_loggedin == True                     for x in clientList:                         if x != conn:                             x.sendall((str(accountName) + " has joined the server").encode("utf_8"))

Let's say there is an account name oliver in the data base and the client sends oliver. For some some reason i don't know is the string length 7 and not 6 and this makes comparing the value with the value from the database imposseble

[bvdinesh]

try this

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Remove ALL spaces in a string, even between words:   import re sentence = re.sub(r"\s+", "", sentence, flags=re.UNICODE) Remove spaces in the BEGINNING of a string:   import re sentence = re.sub(r"^\s+", "", sentence, flags=re.UNICODE) Remove spaces in the END of a string:   import re sentence = re.sub(r"\s+$", "", sentence, flags=re.UNICODE) Remove spaces both in the BEGINNING and in the END of a string:   import re sentence = re.sub("^\s+|\s+$", "", sentence, flags=re.UNICODE) Remove ONLY DUPLICATE spaces:   import re sentence = " ".join(re.split("\s+", sentence, flags=re.UNICODE))

[winnetrie]

I tried and none of that is working. The string keeps having that additional space at the end.
I tried many many different things. None of them works

[ichabod801]

What does print(repr(accountName)) return? Since you are using utf-8, I expect there's a unicode character in there that strip doesn't recognize as white space.

[winnetrie]

it returned this in the console:

1	'oliver\x00'

[ichabod801]

Looks like a null unicode character. Try accountName = accountName.replace('\x00', '').

[winnetrie]

Jep i already tried:

1	accountName = accountName.replace('\x00','')

Thank you very much

[DeaD_EyE]

Hm, this is strange. Usually a null byte is not printed as a whitespace.
It's used often as delimiter with the find command piped to xargs.