from Tkinter import *
root = Tk()
users = ['Anne', 'Bea', 'Chris']
for x in range(len(users)):
l = Checkbutton(root, text=users[x][0], variable=users[x])
print "l = Checkbutton(root, text=" + str(users[x][0]) + ", variable=" + str(users[x])
l.pack(anchor = 'w')
root.mainloop()