trans = {'\uff11': '1', '\uff12': '2', '\uff13': '3', '\uff14': '4',
    '\uff15': '5', '\uff16': '6', '\uff17': '7', '\uff18': '8',
    '\uff19': '9', '\uff10': '0'}
string = 'a\uff11\uff12\uff13'
for i, j in trans.items():
    string = string.replace(i, j)
string
Python: How can I replace full-width characters with half-width characters?