<div>
import re<br />
def has_non_alpha_num(s):<br />
&nbsp; &nbsp; return bool(re.search(r'[^a-zA-Z0<wbr />-9]', s))<br />
<br />
print has_non_alpha_num(&quot;123&quot;) &nbsp;# Prints False<br />
print has_non_alpha_num(&quot;abc&quot;) &nbsp;# Prints False<br />
print has_non_alpha_num(&quot;Hello!&quot;<wbr />) &nbsp;# Prints True<br />

</div>


import re
def has_non_alpha_num(s):
    return bool(re.search(r'[^a-zA-Z0-9]', s))

print has_non_alpha_num("123")  # Prints False
print has_non_alpha_num("abc")  # Prints False
print has_non_alpha_num("Hello!")  # Prints True


<div>
<div class="content wysiwyg-content">
Hi,<br />
How do i find out if a string contains any non alpha numeric characters using regular expression, in python?<br />
<br />
Thanks<br />
<br />

</div>
</div>


Hi,
How do i find out if a string contains any non alpha numeric characters using regular expression, in python?

Thanks



Regular expression

Python is a widely used general-purpose, high-level programming language. Its design philosophy emphasizes code readability, and its syntax allows programmers to express concepts in fewer lines of code than would be possible in other languages. Python supports multiple programming paradigms, including object-oriented, imperative and functional programming or procedural styles. It features a dynamic type system and automatic memory management and has a large and comprehensive set of standard libraries, including NumPy, SciPy, Django, PyQuery, and PyLibrary.