human
Solve the following python programming problem given the following code:
def _gen_vcd_symbol() : 
    _codechars = ''.join ([chr (_codechars) for i in range (33, 127)]) 
    _mod = len (_codechars) 
    def next_vcd_symbol(n) : 
        (q, r) = divmod (n, _mod) 
        code = _codechars [r] 
        while (q > 0) : 
            (q, r) = divmod (q, _mod) 
            code = (_codechars [r] + code) 
return code 
n = 0 
    while 1 : 
        (yield next_vcd_symbol (n)) 
        n += 1 

    
    

    Fix the buggy line: _codechars = ''.join ([chr (_codechars) for i in range (33, 127)])
assistant
#Here is Python program to fix the buggy line: _codechars = ''.

_codechars = ''.join ([chr (i) for i in range (33, 127)])