String alignment does not work with ansi colors

问题

Facing this issue with Python:

a = "text"
print('{0:>10}'.format(a))
# output:      text
b = "\x1b[33mtext\x1b[0m"
print('{0:>10}'.format(b))
# output: text

As you can see the right-justification stopped working once the coloring tags get added to the text. The second "text" should be indented as the first one, but it was not.

回答1:

This is to be expected because the data is already longer than your field width:

>>> len(b)
13
>>> len('{0:>10}'.format(b))
13

To see a workaround, check here: Printed length of a string in python (in particular, the answer from user dawg)

来源：https://stackoverflow.com/questions/48816914/string-alignment-does-not-work-with-ansi-colors