PYTHON

python regex get string before character

You don't need regex for this

>>> s = "Username: How are you today?"
You can use the split method to split the string on the ':' character

>>> s.split(':')
['Username', ' How are you today?']

python regex get word after string

regexp = re.compile("name(.*)$")
print regexp.search(s).group(1)
# prints " is ryan, and i am new to python and would like to learn more"