checking if a string contains a number
Tim Williams (gmail)
tdwdotnet at gmail.com
Tue Dec 20 09:01:06 EST 2005
On 20/12/05, Suresh Jeevanandam <jm.suresh at gmail.com> wrote:
>
> Hi,
> I have a string like,
> s1 = '12e3'
> s2 = 'junk'
>
> Now before converting these values to float, I want to check if
> they
> are valid numbers.
>
> s1.isdigit returns False.
>
> Is there any other function which would return True for s1 and
> False
> for s2.
float() itself can do the checking for you.
>>> for n in ['12e3','junk']:
... try:
... float(n)
... except:
... print "not valid: ", n
...
12000.0
not valid: junk
>>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20051220/5e05c3b4/attachment.html>
More information about the Python-list
mailing list