gistfile1.py

def str_full_to_half(in_str):
    """
    Adapt from http://www.pythonclub.org/python-scripts/quanjiao-banjiao
    """
    out_str = []
    for char in ustring:
        inside_code = ord(char)
        if inside_code == 0x3000:
            inside_code = 0x0020  # space
        else:
            inside_code -= 0xfee0
        if inside_code < 0x0020 or inside_code > 0x7e:
            out_str.append(char)
        out_str.append(chr(inside_code))
    return ''.join(out_str)
    
# str_full_to_half('，：')
# ',:'
# str_full_to_half('、')
# ValueError

Hi there:
ustring seems not be defined, can you revised it?thanks a lot!

def str_full_to_half(in_str):
out_str = []
for char in in_str:
inside_code = ord(char)
if inside_code == 0x3000:
inside_code = 0x0020 # space
else:
inside_code -= 0xfee0
if inside_code < 0x0020 or inside_code > 0x7e:
out_str.append(char)
out_str.append(chr(inside_code))
return ''.join(out_str)

It works!