#Find all of the instances of non alphanumeric characters in 'lorem_ipsum'
#Output the number of non-alphanumeric characters.

results= re.findall(r'[^a-zA-Z0-9]',lorem_ipsum)
print(len(results))

#Find all of the instances of 'sit-amet' or 'sit:amet' characters in 'lorem_ipsum'
#Set variable named 'occurrance_sit_amet'
#Output the number of sit-amet or sit:amet occurrances.

occurrences_sit_amet= re.findall(r'sit[-:]amet',lorem_ipsum)
print(len(occurrences_sit_amet))

#Replace sit:amet and sit-amet with sit amet using.
#Set variable named 'replace_results'

replace_results = re.sub('sit[:-]amet','sit amet', lorem_ipsum )

#Find all of the instances of 'sit amet' in 'replace_results'
#Set a variable named 'occurrance_sit_amet'
#Output the number of sit amet occurrances.

occurrences_sit_amet= re.findall('sit amet',replace_results)
print(len(occurrences_sit_amet))