interesting.py

uri = '/httpbin/headers'

# we want to strip the `/httpbin` off the front
new_uri = uri.lstrip('/httpbin')
# this returns 'eaders' because it treats the input into lstrip as a set of characters to strip. So it strips all of
# those characters until it finds something that is not in one of those (e)

# now, let's try with something more predictable
uri = '/httpbin/status'
# this returns status, as expected!
new_uri = uri.lstrip('/httpbin')

# to properly split this, we need to use regex:
uri = '/httpbin/headers'
new_uri = re.sub(r'^/httpbin', '', uri)