Regular expressions for accents like ó character in python

[Sallu]

i want to restrict to user to not enter accents character. si i need
to make an Regular expressions for accents like ó character

 

[Gabriel Genellina]

i want to restrict to user to not enter accents character. si i need
to make an Regular expressions for accents like ó character

You may enumerate all the allowed characters:

py> allowed_re = re.compile(r"^[A-Za-z0-9 ]*$")
py> input = "hello world"
py> allowed_re.match(input)
<_sre.SRE_Match object at 0x00A3C1E0>
py> input = "código inválido"
py> allowed_re.match(input)
py> print allowed_re.match(input)
None