Google Snippet | Python Fiddle

haystack = "lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor it is no wonder that nike is one of the largest brands in the world is not lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor lorem ipsum dorlor"

needle = "nike342"

lookahead = 7  # Number of tokens to show before "nike"

tokens = haystack.split(" ")  # Split string into a list of tokens

found_index = -1  #  Represents the index of the token.  Initialize to -1 and assume it doesn't exist.

# Loop through tokens and compare each to the needle.  If we find the needle, rememeber the index and break out of the loop

found_index = tokens.index(needle)

try:
    found_index = tokens.index(needle)
    # Get the max of the found index minus the number of words to show before the needle, and 0
    found_index = max(found_index - lookahead, 0)        
    
    # Create a sub list of the tokens from the found_index and end, then join those terms back together with a space.
    snippet = " ".join(tokens[found_index:len(tokens)])
    
except ValueError:
    snippet = ""  # No snippet or whatever error handling you are going to do

print snippet

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