How to control padding of Unicode string containing east Asia characters

Question

I got three UTF-8 stings:

hello, world
hello, 世界
hello, 世rld

I only want the first 10 ascii-char-width so that the bracket in one column:

Answer 1

if you are working with English and Chinese characters, maybe this snippet can help you.

data = '''\
蝴蝶(A song)
心之城(Another song)
支持你的爱人(Yet another song)
根生的种子
鸽子歌(Cucurrucucu palo whatever)
林地之间
蓝光
在你眼里
肖邦离别曲
西行（魔戒王者再临主题曲）(Into something)
深陷爱河
钟爱大地
时光流逝
卡农
舒伯特小夜曲(SERENADE)
甜蜜的摇篮曲(Sweet Lullaby)'''

width = 80

def get_aligned_string(string,width):
    string = "{:{width}}".format(string,width=width)
    bts = bytes(string,'utf-8')
    string = str(bts[0:width],encoding='utf-8',errors='backslashreplace')
    new_width = len(string) + int((width - len(string))/2)
    if new_width!=0:
        string = '{:{width}}'.format(str(string),width=new_width)
    return string

for i,line in enumerate(data.split('\n')):
    song = get_aligned_string(line,width)
    line = '|{:4}: {:}|'.format(i+1,song)
    print(line)

Output