Why can't strip remove the space in this string?

Question

s = '种草 ​'
print(len(s))
s = s.strip()
print(len(s))

And the output for both is '4'. It seems the space takes up 2 characters and can't be removed by the strip() function. It's a Chinese space and can't be removed by the strip function.

Answer 1

It's not a usual unicode space. you can remove it like this.

s = '种草 ​'
print(len(s))
s = s.strip(u'\u200b').strip()
print(len(s))

Answer 2

strip removes spaces from both ends of a string.

>>> s = '种草 ​'
>>> ord(s[-1])
8203
>>> ord(s[-2])
32
>>> ord(' ')
32

The last character here is not a space character. The second last character is a space.