Regular expression

[Sallu]

Hi All,
here i have on textbox in which i want to restrict the user to not
enter the 'acent character' like ( é )
i wrote the program

import re
value="this is Praveen"
#value = 'riché gerry'
if(re.search(r"^[A-Za-z0-9]*$",value)):
print "Not allowed accent character"
else:
print "Valid"

output :

sys:1: DeprecationWarning: Non-ASCII character '\xc3' in file regu1.py
on line 3, but no encoding declared; see http://www.python.org/peps/pep-0263.html
for details
Valid

when i make comment #value="this is Praveen" and released comment
value = 'riché gerry'
but still i am getting same output even it have accent character.

 

[Sallu]

Hi,
Your post is not about re, but about encoding, next time
be more careful when choosing topic for your post!
Did you check what pep0263 says about encoding?
One of the first thins it says is:

"(...)
Defining the Encoding
Python will default to ASCII as standard encoding if no other
     encoding hints are given.
(...)"

So when you're using non ASCII characters you should always
specify encoding. Here again, read pep0263 for how this can
be done, especially section Defining Encoding, where there
are multiple ways of doing that.

Sallu pisze:

Hi All,
here i have on textbox in which i want to restrict the user to not
enter the 'acent character' like ( é )
i wrote the program

import re
value="this is Praveen"
#value = 'riché gerry'
if(re.search(r"^[A-Za-z0-9]*$",value)):
  print "Not allowed accent character"
else:
  print "Valid"

output :

sys:1: DeprecationWarning: Non-ASCII character '\xc3' in file regu1.py
on line 3, but no encoding declared; seehttp://www.python.org/peps/pep-0263.html
for details
Valid

when i make comment #value="this is Praveen" and released comment
value = 'riché gerry'
but still i am getting same output even it have accent character.

I am sorry sotys..actually i am very much new to python..
import re
import os, sys

string = 'riché'
print string


def strip_accents(string):
import unicodedata
return unicodedata.normalize('NFKD',
unicode(string)).encode('ASCII', 'ignore')


msg=strip_accents(string)
print msg

Output :

sys:1: DeprecationWarning: Non-ASCII character '\xc3' in file regu.py
on line 4, but no encoding declared; see http://www.python.org/peps/pep-0263.html
for details
riché
Traceback (most recent call last):
File "regu.py", line 13, in ?
msg=strip_accents(string)
File "regu.py", line 10, in strip_accents
return unicodedata.normalize('NFKD',
unicode(string)).encode('ASCII', 'ignore')
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position
4: ordinal not in range(128)