# Exercise 6: Read the documentation of the string methods
# at https://docs.python.org/library/stdtypes.html#string-methods
# You might want to experiment with some of them to
# make sure you understand how they work. strip and replace are particularly useful.
#
# The documentation uses a syntax that might be confusing. For example,
# in find(sub[, start[, end]]), the brackets indicate optional arguments.
# So sub is required, but start is optional, and if you include start, then end is optional.

s = 'hello world \n'
print(repr(s))
print(s)
print(s.strip())
print(s.rstrip())
print(s.find('w'))
print(s.find('w', 5, 10))
