Python: Increment accidentally 0 indexed lists when the contexts should start at 1

unzero.py

######################################################
### Ever accidentally make a list of immutable tuples 
### only to find you used 0 as the base index instead 
### of 1? So did I, ergo, unzero_list_of_tuples
### Ever have the reverse happen? use zero_list_of_tuples
######################################################
def unzero_list_of_tuples(t_list):
    ret_list = []
    for item in t_list:
        for i in range(len(item)):
            locals()["v" + str(i)] = item[i] + 1
            ret_list.append((v0,v1,v2,v3))
    return ret_list
    
def zero_list_of_tuples(t_list):
    ret_list = []
    for item in t_list:
        for i in range(len(item)):
            locals()["v" + str(i)] = item[i] - 1
            ret_list.append((v0,v1,v2,v3))
    return ret_list