Python: How can I replace full-width characters with half-width characters?

Question

If this was PHP, I would probably do something like this:

function no_more_half_widths($string){
  $foo = array(\'１\',\'２\',\'３\',\'４\',\'５\',\'６\',\'７\',\'８         


        

Answer 1

In Python 3, cleanest is to use str.translate and str.maketrans:

FULLWIDTH_TO_HALFWIDTH = str.maketrans('１２３４５６７８９０',
                                       '1234567890')
def fullwidth_to_halfwidth(s):
    return s.translate(FULLWIDTH_TO_HALFWIDTH)

In Python 2, str.maketrans is instead string.maketrans and doesn’t work with Unicode characters, so you need to make a dictionary, as Josh Lee notes above.