Regular expression for stock tickers - Python

Question

I have a list of tweets. They look like this:

data = [['trading $aa $BB stock market info'],
        ['$aa is $116 market is doing well $cc $ABC']]

I want to extract stock tickers:

['$aa', '$BB']
['$aa', '$cc', '$ABC']]

I have tried this:

for i in data:
    print re.findall(r'[$]\S*', str(i))

And, the output contains $116 as well:

['$aa', '$BB']
['$aa', '$116', '$cc', '$ABC']]

Any suggestions?

Answer 1

Match the dollar sign, one letter, and then anything that's not a space:

re.findall(r'[$][A-Za-z][\S]*', str(i))

Answer 2

I'll just leave this here for people looking for a regex that matches a stock ticker

re.fullmatch('([A-Za-z]{1,5})(-[A-Za-z]{1,2})?', symbol)