vollmerk@kvollmer:~$ python testo.py
is
often
late
to
class
----------
vollmerk@kvollmer:~$ cat testo.py
#!/usr/bin/python
"""print words in all lower, then print words with upper case characters"""
user="Rik Goldman is often late to English class"
words = user.strip().split()
for word in words:
        if word.islower():
           print word
print "----------"
for word in words:
        if word.isupper():
           print (word)