def artists_by_letter(letter):
if len(letter) == 1 and letter.isalpha():
artists = Artist.get_artists_by_letter(letter)
left = []
right = []
for i, artist in enumerate(artists):
if i % 2 == 0:
left.append(artist)
else:
right.append(artist)
return render_template('artists.html', title='Flask Lyrics - Artists',
left=left, right=right, letter=letter)
return redirect(url_for('home.home_'))
