【原】Python 用例：打印一个 Header Box

sentence= input("Input Sentence: ")

screen_width=80
text_width= len(sentence)
box_width= text_width +2
left_margin= (screen_width - box_width)//2

print ('')
print (' '*left_margin + '+'+'-'*(box_width-2) + '+')
print (' '*left_margin + '|'+' '*text_width    + '|')
print (' '*left_margin + '|'+    sentence      + '|')
print (' '*left_margin + '|'+' '*text_width    + '|')
print (' '*left_margin + '+'+'-'*(box_width-2) + '+')