Testing string for characters that are not letters or numbers

Question

I have a string like 'H897b Site', and I want to test that string to make sure it only contains letters and numbers and no special characters.

So in cases like 'H897b Sit$e' and 'H8(&b Site' I want to be able to flag it.

What I am trying to accomplish is to loop through a column in a table and check for typing errors from the data entry person.

@JoranBeasley Yes, spaces are fine. In my example above, the space is acceptable. The first part of the string before the space is the is the actual site name. The ' Site' will always come after the actual site name. Does that clear up your question? — Mike, Jun 05 '13 at 18:41
Mike: @Marc is right and _your_ question is what is not constructive. See the Stack Exchange [Community FAQ](http://meta.stackexchange.com/questions/7931/faq-for-stack-exchange-sites) about asking questions. All see [Why are some questions closed?](http://stackoverflow.com/helpcenter/closed-questions). — martineau, Jun 05 '13 at 18:55
Other duplicates: http://stackoverflow.com/questions/89909/in-python-how-to-i-verify-that-a-string-only-contains-letters-numbers-undersco http://stackoverflow.com/questions/10944438/how-do-i-check-if-a-string-only-contains-alphanumeric-characters-and-dashes http://stackoverflow.com/questions/4939669/how-do-i-write-a-regex-function-in-python-that-checks-if-a-user-has-only-letters — jscs, Jun 05 '13 at 22:21

score 1 · Answer 1 · edited Jun 05 '13 at 17:58

1

You can loops through the string and make checks like

if 'z' >= c >= 'a'

Similarly for numerals etc.

edited Jun 05 '13 at 17:58

iruvar

answered Jun 05 '13 at 17:45

Aseem Bansal

score 1 · Answer 2 · answered Jun 05 '13 at 17:52

1

    print all(part.isalnum() for part in my_string.split())

answered Jun 05 '13 at 17:52

Joran Beasley

2 Answers2