def test_find_number_1():
 s = 'jashlhl123sfs'
 r = find_number(s)
 assert (s[r[0]:r[1]] == '123')

def test_find_number_1 ( ) : s = 'jashlhl123sfs' r = find_number ( s ) assert ( s [ r [ 0 ] : r [ 1 ] ] == '123' )
tests that we find an int among letters .