def test_find_number_8():
 s = 'ryleh -14e7$$!$'
 r = find_number(s)
 assert (s[r[0]:r[1]] == '-14e7')

def test_find_number_8 ( ) : s = 'ryleh -14e7$$!$' r = find_number ( s ) assert ( s [ r [ 0 ] : r [ 1 ] ] == '-14e7' )
tests that we find numbers with exponents and negative signs .