Dynamically generate variables in a loop

while (month_lag >= '201601'):
   locals()["lc_"+month_lag] = get_month_lc(-i)
   month_lag = utility.datetime_month_lag(-i)[3]
   i=i+1

   print('The iter_lc is:', month_lag)

Through locals()["lc_"+month_lag], variables are dynamically generated in the loop