python - How to check a string for specific characters?

Question

How can I check if a string has several specific characters in it using Python 2?

For example, given the following string:

The criminals stole $1,000,000 in jewels.

How do I detect if it has dollar signs ("$"), commas (","), and numbers?

Answer 1

Assuming your string is s:

'$' in s        # found
'$' not in s    # not found

# original answer given, but less Pythonic than the above...
s.find('$')==-1 # not found
s.find('$')!=-1 # found

And so on for other characters.

... or

pattern = re.compile(r'd$,')
if pattern.findall(s):
    print('Found')
else
    print('Not found')

... or

chars = set('0123456789$,')
if any((c in chars) for c in s):
    print('Found')
else:
    print('Not Found')

[Edit: added the '$' in s answers]