Surrounding words
Now, you want to perform some visualizations with your sentiment_analysis dataset. You are interested in the words surrounding python. You want to count how many times a specific word appears right before and after it.
Positive lookahead (?=) makes sure that first part of the expression is followed by the lookahead expression. Positive lookbehind (?<=) returns all matches that are preceded by the specified pattern.
The variable sentiment_analysis, containing the text of one tweet, and the re module are loaded in your session. You can use print() to view the data in the IPython Shell.
Deze oefening maakt deel uit van de cursus
Regular Expressions in Python
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
# Positive lookahead
look_ahead = re.____(r"____(____)", ____)
# Print out
print(____)